Sânpetru Formation
The Sânpetru Formation is a early Maastrichtian geologic formation. Dinosaur remains are among the fossils that have been recovered from the formation.[1] It is located in Romania, near Sânpetru village, part of Sântămăria-Orlea commune. It forms a component of the Hațeg Island fauna.
Sânpetru Formation Stratigraphic range: Early Maastrichtian ~70–68 Ma | |
---|---|
![]() Sibișel River (Strei) near the Sânpetru Formation | |
Type | Geological formation |
Sub-units | Lower & Upper Members |
Underlies | Miocene deposits |
Overlies | Strei Formation, flysch |
Thickness | 2,500 m (8,200 ft) of which 860 m (2,820 ft) exposed |
Lithology | |
Primary | Mudstone, sandstone |
Other | Conglomerate |
Location | |
Coordinates | 45.6°N 22.9°E |
Approximate paleocoordinates | 30.5°N 22.1°E |
Region | Hunedoara |
Country | ![]() |
Extent | Central Hațeg Basin |
Type section | |
Named for | Sânpetru |
![]() ![]() Sânpetru Formation (Romania) |
Description
The Sânpetru Formation crops out in the central to southern Hațeg Basin along the Bărbat River and comprises sandstones and mudstones deposited in a wet floodplain environment characterized by braided fluvial channels. The formation is correlated with the Densuș-Ciula Formation of the northern section of the same basin, both dating to the Maastrichtian of the Late Cretaceous.[2]
Fossil content
Amphibians
Amphibians of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Albanerpeton | Indeterminate | Albanerpetonid | ||||
Paralatonia | P. transylvanica | Frog | ||||
Turtles
Turtles of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Kallokibotion | K. bajazidi | |||||
Dortokidae | Indeterminate | |||||
Emydidae | Indeterminate | |||||
Squamates
Squamates of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Barbatteius | B. vremiri | |||||
Becklesius | B. nopcsai | |||||
Bicuspidon | B. hatzegiensis | |||||
Lacertilia | Indeterminate | 5 distinct taxa | ||||
Madtsoiidae | Indeterminate | Snake | ||||
Crocodyliformes
Crocodyliformes of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Allodaposuchus[3] | Indeterminate | |||||
Sabresuchus | S. sympiestodon | |||||
Ornithischians
Ornithischians of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Struthiosaurus[4] | S. transylvanicus[4] | |||||
Telmatosaurus[4][5] | T. transsylvanicus[4] | "[Five to ten] fragmentary skulls, some with associated posctrania, mixed age classes."[6] | ||||
Zalmoxes[4] | Z. robustus[4] | |||||
Z. shqiperorum[4] | ||||||
Sauropods
Sauropods of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Magyarosaurus[4] | M. dacus[4] | ![]() | ||||
M. hungaricus[4] | ||||||
M. transsylvanicus[4] | ||||||
Theropods
Theropods of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Gargantuavis | Indeterminate | Pelvis[7] | ||||
Bradycneme[4] | B. draculae[4] | "Distal tibiotarsus."[8] | ||||
Elopteryx[4][9] | E. nopcsai[4] | "Fragmentary femur."[8] | ![]() | |||
Euronychodon[10] | Indeterminate[10] | |||||
Heptasteornis[4] | H. andrewsi[4] | "Distal tibiotarsus."[11] | ||||
Megalosaurus[4] | M. hungaricus | "Tooth."[12] | ||||
Pterosaurs
Pterosaurs reported from the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Eurazhdarcho | E.langendorfensis | ![]() | ||||
Hatzegopteryx | H.thambema | ![]() | ||||
Mammals
Mammals from the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Barbatodon | B. transylvanicus | Kogaionid | ||||
Kogaionon | K. ungureanui | Kogaionid | ||||
Color key
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Notes Uncertain or tentative taxa are in small text; |
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See also
- List of dinosaur-bearing rock formations
- Hateg Island
References
- Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- Solomon & Codrea, 2015, p.26
- Solomon & Codrea, 2015, p.28
- "29.3 Judetul Hunedoara, Romania; 1. Sânpetru Formation," in Weishampel, et al. (2004). Pages 592-593.
- Solomon & Codrea, 2015, p.30
- "Table 20.1," in Weishampel, et al. (2004). Page 439.
- Mayr et al., 2019
- "Table 9.1," in Weishampel, et al. (2004). Page 185.
- Kessler et al., 2005
- Listed as "cf. Euronychodon sp." in "29.3 Judetul Hunedoara, Romania; 1. Sânpetru Formation," in Weishampel, et al. (2004). Pages 592-593.
- "Table 9.1," in Weishampel, et al. (2004). Page 186.
- "Table 4.1," in Weishampel, et al. (2004). Page 78.
Bibliography
- Mayr, Gerald; Vlad Codrea; Alexandru Solomon; Marian Bordeianu, and Thierry Smith. 2019. A well-preserved pelvis from the Maastrichtian of Romania suggests that the enigmatic Gargantuavis is neither an ornithurine bird nor an insular endemic. Cretaceous Research 106. 104271. doi:10.1016/j.cretres.2019.104271
- Solomon, Alexandru, and Vlad Codrea. 2015. Some Maastrichtan vertebrates from fluvial channel fill deposits at Pui (Haṭeg Basin). Muzeul Olteniei Craiova. Oltenia. Studii şi comunicări. Ştiinţele Naturii 31. 26–36. ISSN 1454-6914
- Kessler, E.; D. Grigorescu, and Z. Csiki. 2005. Elopteryx revisited - A new bird-like specimen from the Maastrichtian of the Hateg Basin (Romania). Acta Palaeontologica Romaniae 5. 249–258.
- 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
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