List of the prehistoric life of Montana
This list of the prehistoric life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana.
Precambrian
The Paleobiology Database records no known occurrences of Precambrian fossils in Alabama.
Paleozoic
Selected Paleozoic taxa of Montana
- †Achistrum
- †Allenypterus – type locality for genusLife restoration of the Carboniferous lobe-finned fish Allenypterus
- †Allenypterus montanus – type locality for species
- Ammodiscus
- †Amphiscapha
- †Amplexus
- †Aphelaeceras
- †Athyris
- †Atrypa
- †Aulopora
- †Aviculopecten
- †Aviculopecten kaibabensis – or unidentified comparable form
- †Avonia
- †Bathyuriscus
- †Belantsea – type locality for genusRestoration of the Carboniferous Chimaera relative Belantsea
- †Belantsea montana – type locality for species
- †Bellerophon
- †Callograptus
- †Camarotoechia
- †Camarotoechia contracta
- †Camarotoechia crenistria
- †Camarotoechia elegantula
- †Camarotoechia herrickana – or unidentified related form
- †Camarotoechia metallica
- †Camarotoechia mutata
- †Camarotoechia tuta
- †Caninia
- †Caridosuctor – type locality for genusFossilized skeleton of the Carboniferous coelacanth Caridosuctor
- †Carinoclymenia
- †Cavusgnathus
- †Cheiloceras
- †Chonetes
- †Chonetes geniculatus
- †Chonetes loganensis
- †Chonetes logani
- †Chonetes ornatus
- †Cladodus
- †Cleiothyridina
- †Cleiothyridina atrypoides
- †Cleiothyridina ciriacksi – type locality for species
- †Cleiothyridina coloradoensis – or unidentified comparable form
- †Cleiothyridina devonica
- †Cleiothyridina hirsuta
- †Cleiothyridina incrassata – or unidentified related form
- †Cleiothyridina sublamellosa
- †Clonograptus
- †CompositaFossilized shell of the Late Devonian-Permian brachiopod Composita
- †Composita humilis
- †Composita laevis
- †Composita lateralis – or unidentified comparable form
- †Composita madisonensis
- †Composita ovata
- †Composita ozarkana
- †Composita sulcata
- †Cornulites
- †Crania
- †Cyranorhis – type locality for genus
- †Cyrtospirifer
- †Cyrtospirifer animaensis
- †Cyrtospirifer animasensis – or unidentified comparable form
- †Cyrtospirifer bertrandi – type locality for species
- †Cyrtospirifer gallatinensis
- †Cyrtospirifer hornellensis
- †Cyrtospirifer monticola
- †Cyrtospirifer perryi – type locality for species
- †Cyrtospirifer thalattodoxa – tentative report
- †Cyrtospirifer whitneyi
- †Cystodictya
- †Damocles – type locality for genus
- †Debeerius – type locality for genus
- †Delphyodontos – type locality for genusLife restoration of the Carboniferous Chimaera relative Delphyodontos
- †Delphyodontos dacriformes – type locality for species
- †Dendrograptus
- †Dictyonema
- †Dikelocephalus
- †Distomodus
- †Echinaria
- †Edmondia
- †Elrathina
- Eocaudina
- †Falcatus
- †Falcatus falcatus
- †Favosites
- †Fenestella
- †Fenestrella
- †Geragnostus
- †Hadronector – type locality for genus
- †Harpagofututor – type locality for genusRestoration (bottom) of the Carboniferous "antlered" Chimaera relative Harpagofututor
- †Harpagofututor volsellorhinus – type locality for species
- †Helicoprion
- †Hyolithes
- †Hypothyris
- †Hypseloconus
- †Irvingella
- †Janassa
- †Joanellia
- †Joanellia lundi
- †Kendallina
- †Kootenia
- †Lingula
- †Lingulella
- †Lioestheria
- †Lithostrotion
- †Lloydia
- †Lochmocercus – type locality for genus
- †Maladia
- †Martinia
- †Maryvillia
- †Megalaspidella
- †MegistaspisFossil of the Cambrian-Silurian trilobite Megistaspis
- †Micromitra
- †Naticopsis
- †Naticopsis remex – or unidentified comparable form
- †Neospirifer
- †Neospirifer praenuntius – type locality for species
- †Neospirifer striatus
- †Netsepoye – type locality for genus
- †Nisusia
- † Nix – type locality for genus
- †Obolus
- †Ogyginus
- †Orygmaspis
- †Ozarkodina
- †Ozarkodina deflecta
- †Ozarkodina elongata
- †Ozarkodina macilenta
- †Ozarkodina modesta
- †Ozarkodina regularis
- †Paladin – tentative report
- †Paleolimulus
- †Paratarrasius – type locality for genus
- †Pelagiella
- †PentremitesFossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites
- †Peronopsis
- †Pinna
- †Platyceras
- †Platyclymenia
- †Polyosteorhynchus – type locality for genus
- †Prodentalium
- †Proetus
- †Prographularia
- †Ptychagnostus
- †Ptychoparia
- † Ramesses – type locality for genus
- †Rota
- †Siksika – type locality for genus
- †Siksika ottae – type locality for species
- †Soris – type locality for genus
- †Spathognathodus
- †SpiriferFossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
- †Spirifer brazerianus – or unidentified related form
- †Spirifer centronatus
- †Spirifer greenockensis – or unidentified comparable form
- †Spirifer grimesi
- †Spirifer louisianensis – or unidentified related form
- †Spirifer marionensis – or unidentified comparable form
- †Spirifer mudulus
- †Spirifer raymondi
- †Spirifer shoshonensis
- †Spirifer welleri – tentative report
- †Spiriferina
- Spirorbis
- †StethacanthusLife restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
- †Stethacanthus altonensis
- †Syringopora
- †Tornoceras
- †Tylonautilus
- †Westergaardodina
- †Wilkingia
- †Worthenia – tentative report
Mesozoic
Selected Mesozoic taxa of Montana
- †Achelousaurus – type locality for genusLife restoration of the Late Cretaceous horned dinosaur Achelousaurus
- †Achelousaurus horneri – type locality for species
- †Acheroraptor – type locality for genus
- †Acheroraptor temertyorum – type locality for species
- Acipenser
- †Acristavus – type locality for genus
- †Acristavus gagslarsoni – type locality for species
- †Adocus
- †Albanerpeton
- †Albanerpeton nexuosus
- †Albertaceratops
- †Albertaceratops nesmoi
- †Albertosaurus
- †Allocrioceras
- †AllosaurusLife restoration of the Late Jurassic theropod dinosaur Allosaurus
- †Alphadon
- †Alphadon attaragos
- †Alphadon halleyi – type locality for species
- †Alphadon marshi
- †Alphadon wilsoni
- †Alzadasaurus – tentative report
- Amia
- †Amphicoelias
- †Anatotitan
- †Anatotitan copei
- †Ankylosaurus – type locality for genusLife restoration of the Late Cretaceous armored dinosaur Ankylosaurus
- †Ankylosaurus magniventris – type locality for species
- †Aquilops – type locality for genus
- †Aquilops americanus – type locality for species
- Aralia – or unidentified comparable form
- †Arcticoceras – tentative report
- †Arctocephalites
- †Arctocephalites gracilis – or unidentified comparable form
- †Arctocephalites maculatus – or unidentified comparable form
- †Arctocephalites platynotus – or unidentified comparable form
- †Arctocephalites sawtoothensis
- †Arctocephalites saypoensis
- †Asplenium
- Astarte
- †Aublysodon
- †Aublysodon mirandus
- †Avaceratops – type locality for genus
- †Avaceratops lammersi – type locality for species
- †Avisaurus – type locality for genusLife restoration of the Late Cretaceous toothed bird Avisaurus perched on a crocodilian
- †Avisaurus archibaldi – type locality for species
- †Avisaurus gloriae – type locality for species
- Azolla
- †Baculites
- †Baculites asper
- †Baculites codyensis
- †Baculites compressus
- †Baculites mariasensis
- †Baena
- †Bambiraptor – type locality for genus
- †Bambiraptor feinbergi – type locality for species
- Barbourula – or unidentified comparable form
- †BasilemysMounted fossilized skeleton of the Cretaceous turtle Basilemys
- †Belonostomus
- †Belonostomus longirostris
- †Bernissartia
- †Borealosuchus
- †Borealosuchus sternbergii
- Brachaelurus
- †Brachyceratops – type locality for genus
- †Brachyceratops montanensis – type locality for species
- †Brachychampsa – type locality for genus
- †Brachychampsa montana – type locality for species
- †BrachylophosaurusFossilized natural mummy of the Late Cretaceous duck-billed dinosaur Brachylophosaurus
- †Brachylophosaurus canadensis – type locality for species
- †Camarasaurus
- Campeloma
- Carcharias
- †Cedrobaena
- †Centrosaurus
- †Cerasinops – type locality for genus
- †Cerasinops hodgskissi – type locality for species
- †Ceratodus
- †Ceratops – type locality for genus
- †Ceratops montanus – type locality for species
- †Chamops
- †ChampsosaurusLife restoration of the Late Cretaceous-Eocene choristoderan reptile Champsosaurus
- †Chasmosaurus – or unidentified comparable form
- Chiloscyllium
- †Chirostenotes
- †Chirostenotes elegans
- Chlamys
- †Chondroceras
- †Cimexomys
- †Cimexomys minor
- †Cimolestes
- †Cimolestes incisus
- †Cimolestes stirtoni
- †Cimoliasaurus
- †Cimolodon
- †Cimolodon nitidus
- †CimolomysLife restoration of the face of the Late Cretaceous multituberculate mammal Cimolomys
- †Cimolomys clarki – type locality for species
- †Cimolomys gracilis
- †Cimolopteryx
- †Cimolopteryx maxima
- Cladophlebis
- †Cladophlebis alberta
- †Cladophlebis constricta
- †Cladophlebis heterophylla
- †Cladophlebis inclinata
- †Cladophlebis oblongifolia
- †Cladophlebis oerstedi
- †Cladophlebis virginiensis
- †Claosaurus
- †Claraia
- †Claraia aurita
- †Claraia clarai
- †Claraia mulleri
- †Claraia stachei
- †Clidastes
- †Componocancer
- †Componocancer roberti
- †Compsemys
- †Coniophis
- †Continuoolithus
- †Coriops
- †CorythosaurusMounted fossilized skeleton of the Late Cretaceous duck-billed dinosaur Corythosaurus
- †Corythosaurus casuarius
- †Cretolamna
- †Cretolamna appendiculata
- †Cretorectolobus – type locality for genus
- †Cretorectolobus olsoni – type locality for species
- †Crocodilus
- Cucullaea
- †Daspletosaurus
- †Daspletosaurus horneri – type locality for species
- †Deinodon – type locality for genus
- †Deinodon horridus – type locality for species
- †Deinonychus – type locality for genusLife restoration of the Early Cretaceous dromaeosaur ("raptor") Deinonychus
- †Deinonychus antirrhopus – type locality for species
- †Deinosuchus – type locality for genus
- †Deinosuchus rugosus – type locality for species
- Dentalium
- †Derrisemys
- †Diclonius
- †Didelphodon
- †Didymoceras
- †Didymoceras cheyennense
- †Didymoceras nebrascense
- †Didymoceras stevensoni
- †DiplodocusLife restoration of the Late Jurassic long-necked dinosaur Diplodocus
- †Doratodon – or unidentified comparable form
- †Dromaeosaurus
- †Dromaeosaurus albertensis
- †Dyoplosaurus
- †Dyoplosaurus acutosquameus
- †Edgarosaurus
- †Edgarosaurus muddi
- †Edmontonia
- †Edmontonia longiceps
- †Edmontonia rugosidens – type locality for species
- †Edmontosaurus
- †Edmontosaurus annectensLife restoration of the Late Cretaceous duck-billed dinosaur Edmontosaurus annectens
- †Einiosaurus – type locality for genus
- †Einiosaurus procurvicornis – type locality for species
- †Emarginachelys – type locality for genus
- †Emarginachelys cretacea – type locality for species
- †Eodelphis
- †Eopelobates – or unidentified comparable form
- †Equisetum
- †Essonodon – type locality for genus
- †Essonodon browni – type locality for species
- †Eucrossorhinus
- †Euomphaloceras
- †EuoplocephalusRestoration of the Late Cretaceous armored dinosaur Euoplocephalus
- †Euoplocephalus tutus
- †Eutrephoceras
- †Exiteloceras
- †Exogyra
- Ficus – or unidentified comparable form
- †Gervillia
- †Gilmoremys
- †Gilmoremys lancensis
- Ginkgo
- †Ginkgoites
- †Glishades – type locality for genus
- †Glishades ericksoni – type locality for species
- †Glyptops
- Glyptostrobus – or unidentified comparable form
- †Gobiconodon – type locality for genusMounted fossilized skeleton of the Middle Jurassic-Late Cretaceous mammal Gobiconodon
- †Goniobasis
- †Gorgosaurus
- †Gorgosaurus libratus – type locality for species
- †Gryphaea
- †Gryphaea impressimarginata
- †Gryposaurus
- †Gryposaurus latidens – type locality for species
- †Gryposaurus notabilis
- †Habrosaurus
- †Habrosaurus dilatus
- †Hadrosaurus
- †Hadrosaurus breviceps – type locality for species
- †Hadrosaurus paucidens – type locality for species
- †Hamites
- †HesperornisLife restoration of the Late Cretaceous toothed bird Hesperornis
- †Hybodus
- †Hybodus montanensis – type locality for species
- †Hypacrosaurus
- †Hypacrosaurus stebingeri – type locality for species
- †InoceramusFossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
- †Inoceramus arnoldi
- †Inoceramus canaliculatus
- †Inoceramus cancellatus
- †Inoceramus cardissoides - or unidentified loosely related form
- †Inoceramus cordiformis – or unidentified comparable form
- †Inoceramus erectus
- †Inoceramus fragilis – or unidentified related form
- †Inoceramus frechi – or unidentified comparable form
- †Inoceramus gibbosus
- †Inoceramus gilli – type locality for species
- †Inoceramus glacierensis – type locality for species
- †Inoceramus koeneni
- †Inoceramus latisulcatus – or unidentified comparable form
- †Inoceramus lesginensis
- †Inoceramus lingua – or unidentified comparable form
- †Inoceramus lundbreckensis
- †Inoceramus sokolovi – type locality for species
- †Inoceramus undabundus
- †Inoceramus walterdorfensis
- †Ischyodus
- †Ischyodus bifurcatus
- †Ischyrhiza
- †Ischyrhiza avonicola
- †Ischyrhiza mira
- †Judiceratops – type locality for genusLife restoration of the Late Cretaceous horned dinosaur Judiceratops
- †Judiceratops tigris – type locality for species
- †Kritosaurus
- †Krokolithes
- †Lepidotes
- †Lepidotes haydeni – type locality for species
- †Lepidotes occidentalis – type locality for species
- Lepisosteus
- †Leptalestes
- †Leptalestes cooki
- †Leptalestes krejcii
- †Leptalestes prokrejcii
- †Leptalestes toevsi – type locality for species
- †LeptoceratopsLife restoration of the Late Cretaceous primitive horned dinosaur Leptoceratops
- †Leptoceratops gracilis
- †Leptorhynchos – tentative report
- †Lingula
- †Lisserpeton – type locality for genus
- †Lisserpeton atlantes
- †Lisserpeton bairdi – type locality for species
- †Lonchidion
- Lopha
- † Lucina
- Lunatia
- †Magnuviator – type locality for genus
- †Maiasaura – type locality for genus
- †Maiasaura peeblesorum – type locality for species
- †Medusaceratops – type locality for genus
- †Medusaceratops lokii – type locality for species
- †Melvius – type locality for genus
- †Meniscoessus
- †Meniscoessus major
- †Meniscoessus robustus – type locality for species
- †Mercuriceratops – type locality for genus
- †Mercuriceratops gemini – type locality for species
- †Mesodma
- †Mesodma formosa
- †Mesodma hensleighi
- †Mesodma primaeva
- †Mesodma thompsoni
- †Metoicoceras
- †Metoicoceras geslinianum
- †Metoicoceras mosbyense – type locality for species
- †Metoicoceras muelleri
- †Metzgeriites
- †Microvenator – type locality for genus
- †Microvenator celer – type locality for species
- †Modiolus
- †Monoclonius – type locality for genus
- †Monoclonius crassus – type locality for species
- †Monoclonius recurvicornis – type locality for species
- †Monoclonius sphenocerus – type locality for species
- †Montanalestes
- †Montanazhdarcho – type locality for genusMounted fossilized skeletons of the Late Cretaceous pterosaur Montanazhdarcho
- †Montanazhdarcho minor – type locality for species
- †Montanoceratops
- †Montanoceratops cerorhynchus – type locality for species
- †Montanoolithus – type locality for genus
- †Mosasaurus
- †Mosasaurus missouriensis
- †Myledaphus
- †Myledaphus bipartitus
- †Mytilus
- †Nanotyrannus
- †Nanotyrannus lancensis – type locality for species
- †Naomichelys – type locality for genus
- †NelumboA living Nelumbo lotus
- †Neocardioceras
- †Neocardioceras juddii
- †Neocardioceras minutum
- †Neoplagiaulax
- †Neoplagiaulax burgessi – type locality for species
- †Nezpercius – type locality for genus
- †Nidimys – type locality for genus
- †Normannites – tentative report
- †Notogoneus
- Nucula
- †Obamadon – type locality for genus
- †Obamadon gracilis – type locality for species
- †Odaxosaurus
- †Odaxosaurus piger
- OdontaspisA living Odontaspis sand shark
- †Odontaspis sanguinei – type locality for species
- †Oklatheridium
- †Onchosaurus
- †Oohkotokia – type locality for genus
- †Oohkotokia horneri – type locality for species
- †Ophiomorpha
- †Opisthotriton
- †Ornithomimus
- †Ornithomimus grandis – type locality for species
- †Ornithomimus tenuis – type locality for species
- †Orodromeus – type locality for genus
- †Orodromeus makelai – type locality for species
- †Oryctodromeus – type locality for genusLife restoration of the Late Cretaceous herbivorous dinosaur Oryctodromeus in a burrow
- †Oryctodromeus cubicularis – type locality for species
- Ostrea
- †Oxytoma
- †Pachycephalosaurus – type locality for genus
- †Pachycephalosaurus wyomingensis – type locality for species
- †Pagiophyllum
- †Palaeobatrachus
- †Palaeosaniwa
- †Palaeosaniwa canadensis
- †Palaeoscincus – type locality for genus
- †Palaeoscincus costatus – type locality for species
- †Palatobaena
- †Paleopsephurus – type locality for genus
- †Paleopsephurus wilsoni – type locality for species
- †PanoplosaurusIllustration of a fossilized skull of the Late Cretaceous armored dinosaur Panoplosaurus
- †Pappotherium
- †Paracimexomys
- †Paracimexomys judithae – type locality for species
- †Paracimexomys magnus – type locality for species
- †Paracimexomys priscus
- †Paracimexomys propriscus – type locality for species
- †Paracimexomys robisoni – or unidentified comparable form
- †Paralbula
- †Paramacellodus – or unidentified comparable form
- †Paranecturus – type locality for genus
- †Paranecturus garbanii – type locality for species
- †ParapuzosiaFossilized shell of the Late Cretaceous ammonoid cephalopod Parapuzosia with a human indicating its size
- †Parapuzosia bradyi – type locality for species
- †Paronychodon
- †Paronychodon lacustris
- †Pectinodon – or unidentified comparable form
- Pholadomya
- †Pholadomya kingi
- Physa
- †Piceoerpeton
- †Piksi – type locality for genus
- †Piksi barbarulna – type locality for species
- †Pinna
- †Pistia
- †Plesiobaena
- †Pleuronautilus
- †Prenoceratops – type locality for genus
- †Prenoceratops pieganensis – type locality for species
- †Prismatoolithus
- †Proamphiuma
- †Prodesmodon
- †ProsaurolophusMounted fossilized skeleton of the Late Cretaceous duck-billed dinosaur Prosaurolophus
- †Prosaurolophus blackfeetensis – type locality for species
- †Protocardia
- †Protoscaphirhynchus – type locality for genus
- †Protungulatum
- †Pseudomelania
- †Pteria – tentative report
- †Pteropelyx – type locality for genus
- †Pteropelyx grallipes – type locality for species
- †Ptychotrygon
- †Ptychotrygon blainensis – type locality for species
- †Ptychotrygon triangularis
- Pycnodonte
- Quercus – report made of unidentified related form or using admittedly obsolete nomenclature
- †Quetzalcoatlus – or unidentified comparable formLife restoration of a flock of the Late Cretaceous pterosaur Quetzalcoatlus feeding on the ground
- †Rhamnus – report made of unidentified related form or using admittedly obsolete nomenclature
- †Richardoestesia
- †Richardoestesia gilmorei
- †Richardoestesia isosceles
- †Rubeosaurus
- †Rubeosaurus ovatus – type locality for species
- †Rugocaudia – type locality for genus
- †Rugocaudia cooneyi – type locality for species
- †Sagenopteris
- †Sagenopteris elliptica
- †Sagenopteris mclearni
- †Sagenopteris williamsii
- †Sauropelta – type locality for genusLife restoration of the Early Cretaceous armored dinosaurs Sauropelta
- †Sauropelta edwardsorum – type locality for species
- †Saurornitholestes
- †Saurornitholestes langstoni
- †Scapherpeton
- †Scaphites
- †Scaphites impendicostatus
- †Scaphites preventricosus
- †Scaphites ventricosus
- †Scolosaurus
- †Scolosaurus cutleri
- †Scotiophryne – type locality for genus
- †SequoiaBase of the trunk of a living Sequoia tree with a human to scale
- Sphaerium
- †Sphaerotholus
- †Sphaerotholus buchholtzae – type locality for species
- †Sphenopteris
- †Sphenopteris brulensis
- †Sphenopteris geopperti
- †Sphenopteris latiloba
- †Sphenopteris mclearni
- †Spheroolithus
- †Spheroolithus albertensis
- †Spheroolithus choteauensis – type locality for species
- †Spheroolithus maiasauroides
- †Spiclypeus – type locality for genusRestoration of the Late Cretaceous horned dinosaur Spiclypeus
- †Spiclypeus shipporum – type locality for species
- †Spiriferina – report made of unidentified related form or using admittedly obsolete nomenclature
- Squalicorax
- †Squalicorax kaupi
- †Squalicorax pristodontus
- †Squatirhina
- †Squatirhina americana
- †Stegoceras
- †Stegoceras validum
- †Stegosaurus
- †Suuwassea – type locality for genus
- †Suuwassea emilieae – type locality for species
- †Tatankacephalus – type locality for genus
- †Tatankacephalus cooneyorum – type locality for species
- †Tenontosaurus – type locality for genusLife restoration of the Early Cretaceous Iguanodon relative Tenontosaurus
- †Tenontosaurus tilletti – type locality for species
- †Terminonaris – type locality for genus
- †Terminonaris robusta – type locality for species
- †Thalassomedon – type locality for genus
- †Thalassomedon hanningtoni – type locality for species
- †Thescelosaurus
- †Thescelosaurus garbanii – type locality for species
- †Thescelosaurus neglectus
- †Toxolophosaurus – type locality for genus
- †Trachodon – type locality for genus
- †Trachodon altidens
- †Trachodon marginatus
- †Trachodon mirabilis – type locality for species
- †TriceratopsMounted fossilized skeleton of the Late Cretaceous horned dinosaur Triceratops
- †Triceratops horridus
- †Triceratops maximus – type locality for species
- †Triceratops prorsus
- †Trigonia
- †Trigonia montanaensis
- Trionyx
- †Triprismatoolithus – type locality for genus
- †Troodon – type locality for genus
- †Troodon formosus – type locality for species
- †Tubercuoolithus – type locality for genus
- Turritella
- †Tylosaurus
- †Tylosaurus proriger
- †Tyrannosaurus – type locality for genusFossilized skeleton of the Late Cretaceous tyrannosaur Tyrannosaurus
- †Tyrannosaurus rex – type locality for species
- †Ugrosaurus – type locality for genus
- †Ugrosaurus olsoni – type locality for species
- Unio
- †Valenopsalis
- Valvata – tentative report
- Vitis – report made of unidentified related form or using admittedly obsolete nomenclature
- Viviparus
- †Volviceramus
- †Woodwardia – report made of unidentified related form or using admittedly obsolete nomenclature
- †Xenocephalites – tentative report
- Xenophora
- †Yezoites
- †ZamitesFossil of the Early Triassic-Eocene cycad-like frond Zamites
- †Zamites arcticus
- †Zapsalis – or unidentified comparable form
- †Zephyrosaurus – type locality for genus
- †Zephyrosaurus schaffi – type locality for species
Cenozoic
Selected Cenozoic taxa of Montana
- Abies
- Abies
- Acer
- †Acheronodon
- †Acheronodon garbani – type locality for species
- Acipenser
- †AcritohippusMounted fossilized skeleton of the Miocene horse Acritohippus
- †Acritohippus isonesus
- †Aelurodon
- †Aepycamelus
- †Aepycamelus stocki
- †Agnotocastor
- †Agriochoerus
- †Agrostis
- †Ailanthus
- Alangium
- Alnus
- †AmebelodonLife restoration of the Miocene elephant relative Amebelodon. Margret Flinsch (1932).
- Amelanchier
- †Amentotaxus
- Amia
- †Ampelopsis
- †Amphechinus
- †Amphicyon
- †Amyzon
- Anas
- †Anas platyrhynchos – or unidentified comparable form
- †Anconodon
- †Anemia
- †Angustidens
- Antilocapra – or unidentified comparable form
- †Antilocapra americana
- †Aphelops
- †Araucaria
- †Archaeocyon
- †Archaeohippus
- †Arctocyon
- †Arctodus
- †Arctodus simus
- †Arctostaphylos
- Arundo
- Arvicola
- †aspera
- †Astronium
- †Athyana
- †Avunculus
- AzollaLiving Azolla water ferns
- †Baiotomeus
- †Baiotomeus douglassi
- †Baiotomeus lamberti – type locality for species
- †Bathygenys
- †Berberis
- Berchemia
- Betula
- Bibio – or unidentified related form
- Bison
- †Bison bison
- †Bison latifrons – or unidentified comparable formMounted fossilized skeleton of the Pleistocene Bison latifrons, also known as the giant bison or long-horned bison
- †Bisonalveus
- †Bisonalveus browni
- †Blastomeryx
- †Blastomeryx gemmifer
- †Bootherium
- †Borealosuchus
- †Borealosuchus sternbergii
- †Brachychampsa
- †Brachycrus
- †Brachyrhynchocyon
- †Camelops
- †Camelops minidokae
- †Canavalia
- Canis
- †Canis latrans
- †Canis lupus
- †Canna
- †Cardiospermum
- Carpinus
- †CarpolestesLife restoration of the Paleocene primate relative Carpolestes
- Carya
- †Cassia
- Castanea
- Castor
- †Castor californicus
- †Castor canadensis
- †Catalpa
- †Catopsalis
- †Catopsalis alexanderi
- †Catopsalis waddleae
- Ceanothus
- Cedrela
- †Celastrus
- Celtis
- Cercidiphyllum
- Cercis
- †Cercocarpus
- †Chamaecyparis
- †Chamops
- †ChampsosaurusLife restoration of the Late Cretaceous-Eocene choristoderan reptile Champsosaurus
- †Chisternon
- †Chriacus
- †Chriacus calenancus
- †Chthonophis – type locality for genus
- †Chthonophis subterraneus – type locality for species
- †Cimexomys
- †Cimexomys minor – type locality for species
- †Cimolestes
- †Cimolestes incisus
- CinnamomumA living Cinnamomum, or cinnamon tree
- Cissus
- Clematis
- Cocculus
- †Colodon
- †Colubrina
- †Colubrina asiatica – or unidentified comparable form
- †Compsemys
- †Coniophis – or unidentified comparable form
- †Conzattia
- Cornus
- †Corylus
- †Coryphodon
- †Cosoryx – tentative report
- Crataegus
- †CredneriaFossilized leaf from a Credneria tree
- Crematogaster
- Culiseta
- †Cynodesmus
- Cynomys
- †Cynomys ludovicianus
- †Dalbergia
- †Daphoenictis – or unidentified comparable form
- †Davidia
- †Derrisemys – type locality for genus
- †Desmatochoerus
- †Diceratherium
- †Didymictis
- †DinictisLife restoration of the Eocene-Miocene false saber-toothed cat Dinictis. Robert Bruce Horsfall (1913).
- †Dinohippus
- †Dioctria – tentative report
- †Diospyros
- †Diphysa
- Dipteronia
- †Dissacus
- Dolichoderus
- †Domnina
- †DromomeryxFossilized horns, jaws, and limb bones of the Miocene deer relative Dromomeryx
- †Dromomeryx borealis
- Dryopteris
- †Ectocion
- †Elomeryx – tentative report
- †Eoconodon
- †Eoconodon nidhoggi
- †Eotitanops
- †Epicyon
- †Epicyon haydeni
- †Epihippus
- †Equisetum
- Equus
- †Equus conversidens – or unidentified comparable form
- †Eucastor
- †Eucommia
- †Eucommia montanaFossilized fruit of the Eocene Eucommia montana plant
- †Euonymus
- †Euoplocyon
- Exbucklandia
- Ficus
- Fokienia
- Formica
- †Fraxinus
- Geochelone
- Gerrhonotus – or unidentified comparable form
- Ginkgo
- Gleichenia
- Glyptostrobus
- †Goniacodon
- †Habrosaurus
- †Habrosaurus dilatus
- †Helaletes
- Helius
- †Helodermoides – type locality for genusFossilized skull of the Oligocene lizard Helodermoides
- †Helodermoides tuberculatus – type locality for species
- †Herpetotherium
- †Herpetotherium fugax
- †Herpetotherium knighti – or unidentified comparable form
- †Hesperocyon
- †Heteraletes
- †Hiodon
- Holmskioldia
- †Holopogon
- Homo
- †HomotheriumRestoration of Pliocene-Pleistocene Homotherium, or scimitar cat
- †Homotherium serum
- †Hutchemys – type locality for genus
- †Hyaenodon
- †Hyaenodon crucians
- Hydrangea
- †Hydromystria
- †Hyopsodus
- †Hypertragulus
- †Hypisodus
- †HypohippusLife restoration of the Miocene horse Hypohippus. Heinrich Harder (1920).
- †Hypolagus
- †Hypsiops
- †Hyrachyus
- †Hyracodon
- †Ictidopappus
- †Intyrictis
- †Ischyrhiza – or unidentified comparable form
- †Ischyrhiza avonicola
- †Ischyromys
- Isoetes
- Juglans
- †Juglans regia – or unidentified comparable form
- Juniperus
- †Kerria
- †Kimbetohia
- Koelreuteria
- Lasius
- Laurus
- Lemmiscus
- †Lemmiscus curtatus
- Lepisosteus
- †LeptaucheniaRestoration of the Oligocene-Miocene oreodont mammal Leptauchenia
- †Leptictis
- †Leptocyon
- †Leptomeryx
- †Leptoreodon
- †Leucaena
- †Limnenetes
- Lindera
- †Lisserpeton
- †Lisserpeton bairdi
- †Lithornis
- †Lithornis celetius – type locality for species
- Lynx
- †Lynx rufusA living Lynx rufus, or bobcat
- Magnolia
- Mahonia
- †Mammut
- †Mammut americanum
- †Mammuthus
- †Mammuthus columbi
- †Mammuthus primigenius
- Marchantia
- Marmota
- Martes
- †MegaceropsLife restoration of battling males of the Eocene brontothere mammal Megacerops
- †Megahippus
- †Megalonyx
- †Megalonyx jeffersonii
- †Megantereon
- †Megatylopus
- †Menodus
- †Merriamoceros
- †Merychippus
- †Merychippus sejunctus
- †Merychyus
- †MerycochoerusRestorative portrait of the Oligocene-Miocene oreodont mammal Merycochoerus
- †Merycodus
- †Merycoides
- †Merycoidodon
- †Mesodma
- †Mesodma formosa
- †Mesodma garfieldensis – type locality for species
- †Mesodma pygmaea – type locality for species
- †Mesodma thompsoni
- †Mesohippus
- †Mesoreodon
- Metasequoia
- †Metopium
- †Miacis – report made of unidentified related form or using admittedly obsolete nomenclatureLife restoration of the Paleocene-Eocene mammal Miacis
- †Microcosmodon
- †Microcosmodon harleyi – type locality for species
- Microtus
- †Microtus pennsylvanicus – or unidentified comparable form
- †Mimetodon
- †Miniochoerus – tentative report
- †Miohippus – type locality for genus
- †Miohippus grandis
- †Monosaulax
- Morus
- Mustela
- †Mustela frenata
- Myrica
- †Nanotragulus
- †Nelumbo
- †NeohipparionLife restoration of a herd of Neohipparion. Robert Bruce Horsfall (1913).
- †Neoplagiaulax
- †Neoplagiaulax donaldorum – type locality for species
- †Neoplagiaulax grangeri – type locality for species
- †Neoplagiaulax hunteri – type locality for species
- †Neoplagiaulax kremnus
- †Neoplagiaulax mckennai
- †Neoplagiaulax nelsoni – type locality for species
- †Niglarodon
- †Nuphar
- †Nyssa
- †Odaxosaurus
- †Odaxosaurus piger
- Odocoileus – or unidentified comparable formA living Odocoileus deer
- Olar
- Ondatra
- †Ondatra zibethicus
- †Onoclea
- †Opisthotriton
- Oreohelix
- †Oreonetes
- †Osmanthus
- †Osmunda
- Ostrya
- †Otarocyon
- †Oxyacodon
- †OxydactylusLife restoration of a pair of the Oligocene-Miocene camel Oxydactylus. Robert Bruce Horsfall (1913).
- †Palaeogale
- †Palaeolagus
- †Palaeoryctes
- †Palaeosinopa
- †Palaeosyops
- †Palatobaena
- †Paleopsephurus – or unidentified comparable form
- Paliurus
- †Pandemonium
- †Pantolambda
- †Pantomimus – type locality for genus
- †ParamylodonFossilized skeleton of the Pliocene-Pleistocene ground sloth Paramylodon
- †Paramylodon harlani
- †Paramys
- †Paratomarctus
- †Parectypodus
- †Parectypodus sinclairi – type locality for species
- †Parectypodus sylviae
- †Parictis
- †Parthenocissus
- †Paulownia
- †Peltosaurus
- Penthetria
- †Peraceras
- Perognathus
- Peromyscus
- †Peromyscus maniculatus – or unidentified comparable form
- Persea
- †PhenacodusLife restoration of the Paleocene-Eocene ungulate Phenacodus. Charles R. Knight (1898).
- Phragmites
- Picea
- †Piceoerpeton
- Pinus
- †Pithecolobium
- †Planetetherium
- †Planetetherium mirabile – type locality for species
- †Plastomenoides – type locality for genus
- Platanus
- Plecia
- †Plesiadapis
- †Pliohippus
- †Plithocyon
- †Poebrotherium
- †PogonodonIllustration of a fossilized skull of the Oligocene false faber-toothed cat Pogonodon
- Populus
- †Potentilla
- †Prochetodon
- †Prochetodon foxi – type locality for species
- †Prodesmodon
- †Proiridomyrmex
- †Promerycochoerus
- †Proscalops
- †Prosphyracephala
- †ProtaztecaFossil of the Oligocene ant Protazteca
- †Protohippus
- †Protolabis
- †Protungulatum
- Prunus
- †Pseudhipparion
- †Pseudolarix
- †Pseudomesoreodon – type locality for genus
- Pseudomyrmex
- †Pseudotsuga
- †PsittacotheriumRestoration of the Paleocene taeniodont mammal Psittacotherium
- Ptelea
- Pteris
- Pterocarya
- †Ptilodus
- †Ptilodus kummae
- †Ptilodus montanus – type locality for species
- †Ptilodus tsosiensis
- †PurgatoriusLife restoration of the Late Cretaceous-Paleocene primate relative Purgatorius
- †Purgatorius janisae – type locality for species
- †Purgatorius titusi – type locality for species
- †Purgatorius unio – type locality for species
- †Pyracantha
- Quercus
- †Rana – or unidentified comparable form
- Rangifer
- †Rangifer tarandus
- †Rhamnus
- Rhus
- †Robinia
- Rosa
- Sabal
- †Saccoloma
- Salix
- †Sambucus
- †Sapindus
- Sassafras
- †Sassafras hesperiaFossilized leaf of the Eocene sassafras Sassafras hesperia
- †Scapherpeton
- †Scaphohippus
- †Scotiophryne – or unidentified comparable form
- †Selaginella
- Sequoia
- †Simoedosaurus
- †Simpson
- †Smilax
- †Sophora
- †Sorbus
- †Sparganium
- Spea
- Spermophilus
- †Spermophilus richardsonii
- †Spiraea
- †Stelocyon
- †Steneofiber
- †StenomylusLife restoration of the Oligocene-Miocene camel Stenomylus
- †Stenomylus hitchcocki – or unidentified comparable form
- Sterculia
- †Stygimys
- †Stygimys camptorhiza – or unidentified comparable form
- †Stygimys jepseni – type locality for species
- †Stygimys kuszmauli – type locality for species
- †Subdromomeryx
- †Subdromomeryx antilopinus
- †Subhyracodon
- †Submerycochoerus
- Sylvilagus
- †Sylvilagus nuttallii
- †Symplocarpus
- †Taeniolabis
- †Taeniolabis lamberti – type locality for species
- †TapocyonLife restoration of the Eocene carnivoran relative Tapocyon
- Taricha
- Taxodium
- †Teleoceras
- †Tetraclaenodon
- Thomomys
- †Thomomys talpoides
- †Thrinax
- †Thuja
- †Ticholeptus
- Tilia
- †Tinuviel
- Tipula
- †TitanoidesLife restoration of the Paleocene pantodonts mammal Titanoides
- †Titanoides gidleyi
- †Trapa
- †Trigenicus
- †Trigonias
- †Tropidia
- †Tylocephalonyx
- Typha
- Ulmus
- Ursus
- †Vaccinium
- †Valenopsalis
- †Vauquelinia
- †Viburnum
- †Viguiera
- Vitis
- †Viverravus – tentative report
- †Woodwardia
- †Xyronomys
- Zelkova
gollark: [REDACTED]
gollark: And?
gollark: If I can get a tablet from a bag or whatever (only the small ones are particularly pocketable, and they then lose any advantage they might have had), I can also probably get out a laptop, which is generally better.
gollark: I have a tablet for convoluted reasons, but it gets absolutely no use because a phone and laptop cover all the things I might want it for.
gollark: Than a phone? I mean, yes, they fix some of the problems, but aren't as portable.
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
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