Alcobaça Formation
The Alcobaça Formation is a geological formation in Portugal. It dates back to the Oxfordian stage of the Late Jurassic.[1] It is an important source of information on the diversity of Late Jurassic mammals.[2][3] Many of the fossils were collected from the now disused and flooded Camadas de Guimarota coal mine.
| Alcobaça Formation Stratigraphic range: Oxfordian-Tithonian ~160–145 Ma | |
|---|---|
| Type | Geological formation |
| Sub-units | Camadas de Guimarota |
| Underlies | Lourinhã Formation |
| Overlies | Montejunto Formation |
| Lithology | |
| Primary | Marl |
| Other | Mudstone, coal, siltstone, limestone, sandstone |
| Location | |
| Coordinates | 39.6°N 9.0°W |
| Approximate paleocoordinates | 33.7°N 1.6°E |
| Region | Estremadura, Leiria, Lisboa |
| Country |  |
| Extent | Lusitanian Basin |
| Type section | |
| Named for | Alcobaça, Portugal |
| Named by | Choffat |
| Year defined | 1885 |
  Alcobaça Formation (Portugal) | |
Vertebrate paleofauna
Dinosaur eggs are geographically located in Lisbon District, Portugal.[4] Dinosaur tracks are geographically located in Leiria District, Portugal.[5]
Amphibians
| Amphibians of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Celtedens | Indeterminate | Porto Pinheiro | ||||
Ornithischians
Indeterminate euornithopod remains located in Lisbon District.[4] Indeterminate stegosaurid remains present in Lisbon District.[4]
| Ornithischians of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | District | Stratigraphic position | Abundance | Notes | Images |
| Dacentrurus[4] | D. armatus[4] | Lisboa[4] |  | |||
| Ornithopoda[4] | Indeterminate[4] | Lisboa[4] | ||||
| Trimucrodon[4] | T. cuneatus[4] | Lisboa[4] | Later determined to be indeterminate ornithischian remains.[4] | |||
Saurischians
Indeterminate sauropod remains located in Leiria and Lisboa.[6]
| Saurischians of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | District | Stratigraphic position | Abundance | Notes | Images |
| Allosaurus[5] | Indeterminate[5] | Leiria[5] |  | |||
| Lusotitan[4] | L. atalaiensis[4] | Lisboa[4] |  | |||
| Ceratosaurus[4] | Indeterminate[4] | Lisboa[4] |  | |||
| Dinheirosaurus[4] | D. lourinhanensis[4] | Lisboa[4] | "[Two] cervicals, [nine] dorsals, ribs, limb elements."[7] |  | ||
| Lourinhasaurus[4] | L. alenquerensis[4] | Lisboa[4] | ||||
| Megalosaurus[4] | M. insignis[4] | Lisboa[4] | Later determined to be indeterminate theropod remains.[4] | |||
Turtles
| Turtles of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Peltochelys | P. duchastelli | Guimarota | ||||
| Platychelys | Indeterminate | Guimarota | ||||
| Pleurosternidae | Indeterminate | Guimarota | ||||
Lepidosauromorphs
| Lepidosauromorphs of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Becklesius | B. hoffstetteri | Guimarota | ||||
| Dorsetisaurus | D. purbeckensis | Guimarota | ||||
| Marmoretta | Indeterminate | Guimarota | Basal Lepidosauromorph | |||
| Portugalophis | P. lignites | Guimarota | Stem-snake | |||
| Saurillodon | S. proraformis | Guimarota | ||||
| Saurillus | S. henkeli, cf. obtusus | Guimarota | ||||
Crocodyliformes
| Crocodyliformes of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Goniopholis | G. baryglyphaeus | Guimarota |  | |||
| Knoetschkesuchus | K. guimarotae | Guimarota |  | |||
| Lisboasaurus | L. mitracostatus | Guimarota | ||||
| Machimosaurus | M. hugii | Guimarota |  | |||
Mammals
| Mammals of the Alcobaça Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Bathmochoffatia | B. hapax | Guimarota | ||||
| Bernardodon | B. sp, B. atlanticus | Porto Pinheiro | ||||
| Drescheratherium | D. acutum | Guimarota | ||||
| Dryolestes | D. leirensis | Guimarota | ||||
| Ecprepaulax | E. anomala | Porto Pinheiro | ||||
| Guimarotodon | G. leiriensis | Guimarota | ||||
| Guimarotodus | G. inflatus | Guimarota | Dryolestidae | |||
| Haldanodon | H. exspectatus | Guimarota | ||||
| Henkelodon | H. naias, H. sp | Guimarota | ||||
| Henkelotherium | H. guimarotae | Guimarota | ||||
| Iberodon | I. quadrituberculatus | Porto Pinheiro | ||||
| Kielanodon | K. hopsoni | Guimarota | ||||
| Krebsotherium | K. lusitanicum | Guimarota | ||||
| Kuehneodon | K. guimarotensis, K. dietrichi, K. simpsoni, K. uniradiculatus, K. sp | Guimarota | ||||
| Laolestes | L. andresi | Porto Pinheiro | ||||
| Meketibolodon | M. robustus | Guimarota | ||||
| Meketichoffatia | M. krausei, M. sp | Guimarota | ||||
| Nanolestes | N. krusati | Porto Pinheiro | ||||
| N. drescherae | Guimarota | |||||
| Paulchoffatia | P. delgadoi | Guimarota | ||||
| Pinheirodon | P. sp, P. vastus, P. pygmaeus | Porto Pinheiro | ||||
| Plesiochoffatia | P. thoas, P. peperethos | Guimarota | ||||
| Portopinheirodon | P. asymmetricus | Porto Pinheiro | A dryolestid | |||
| Priacodon | Indeterminate | Porto Pinheiro | ||||
| Proalbionbaatar | P. plagiocyrtus | Guimarota | ||||
| Pseudobolodon | P. dryas, P krebsi, P. oreas | Guimarota | ||||
| Renatodon | R. amalthea | Guimarota | A paulchoffatiid | |||
| ? Tinodon | Indeterminate | Porto Pinheiro | ||||
| Xenachoffatia | X. oinopion | Guimarota | ||||
| Paulchoffatiidae | Indeterminate | Guimarota | 4 distinct genera with 7 species | |||
| Pinheirodontidae | Indeterminate | Porto Pinheiro | ||||
Color key
|
Notes Uncertain or tentative taxa are in small text; |
gollark: I was using autoincrement but for reasons there are gaps.
gollark: It's in my URL shortener/lengthener.
gollark: Yes.
gollark: Muahahaha. I *have* acquired a prefix-free list.
gollark: There somehow seem to be no conveniently accessible prefix-free wordlists.
See also
- List of dinosaur-bearing rock formations
- List of fossiliferous stratigraphic units in Portugal
References
- Weishampel et al., 2004, pp.545–549
- "Guimarota". Paleobiology Database. Retrieved 31 August 2018.
- "Porto Pinheiro, Lourinha". Paleobiology Database. Retrieved 31 August 2018.
- "16.4 Distrito do Lisboa, Portugal; 1. Camadas de Alcobaça," in Weishampel, et al. (2004). Page 548.
- "16.1 Distrito do Leiria, Portugal; 3. Camadas de Alcobaça," in Weishampel, et al. (2004). Page 548.
- "16.1 Distrito do Leiria, Portugal; 3. Camadas de Alcobaça," and "16.4 Distrito do Lisboa, Portugal; 1. Camadas de Alcobaça," in Weishampel, et al. (2004). Pages 548-549.
- "Table 13.1," in Weishampel, et al. (2004). Page 265.
Bibliography
- Weishampel, David B.; Peter Dodson, and Halszka (eds.) Osmólska. 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.