The Sânpetru Formation is an 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 | |
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Stratigraphic range: Early Maastrichtian ~ | |
![]() Sibișel River 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°36′N 22°54′E / 45.6°N 22.9°E |
Approximate paleocoordinates | 30°30′N 22°06′E / 30.5°N 22.1°E |
Region | Hunedoara |
Country | ![]() |
Extent | Central Hațeg Basin |
Type section | |
Named for | Sânpetru |
Description
editThe 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
editColor key
|
Notes Uncertain or tentative taxa are in small text; |
Amphibians
editAmphibians of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Albanerpeton | Indeterminate | Albanerpetontid | ||||
Paralatonia | P. transylvanica | Frog |
Turtles
editTurtles of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Kallokibotion | K. bajazidi | |||||
Dortokidae | Indeterminate | |||||
Emydidae | Indeterminate |
Squamates
editSquamates 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
editCrocodyliformes of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Allodaposuchus[3] | Indeterminate | |||||
Sabresuchus | S. sympiestodon |
Ornithischians
editOrnithischians of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Struthiosaurus[4] | S. transylvanicus[4] | A skull and partial skeleton. | A nodosaur. | |||
Telmatosaurus[4][5] | T. transsylvanicus[4] | "[Five to ten] fragmentary skulls, some with associated posctrania, mixed age classes."[6] | A small hadrosauromorph. |
| ||
Zalmoxes[4] | Z. robustus[4] | A Rhabdodontid ornithopod. | ||||
Z. shqiperorum[4] |
Sauropods
editSauropods of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
Magyarosaurus[4] | M. dacus[4] | A dwarf sauropod. | ||||
M. hungaricus[4] | ||||||
M. transsylvanicus[4] | ||||||
Paludititan[7] | P. nalatzensis | A dwarf sauropod |
Theropods
editTheropods of the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Gargantuavis | Indeterminate | Pelvis[8] | ||||
Bradycneme[4] | B. draculae[4] | "Distal tibiotarsus."[9] | ||||
Elopteryx[4][10] | E. nopcsai[4] | "Fragmentary femur."[9] | ||||
Euronychodon[11] | Indeterminate[11] | |||||
Heptasteornis[4] | H. andrewsi[4] | "Distal tibiotarsus."[12] | ||||
Megalosaurus[4] | M. hungaricus | "Tooth."[13] |
Pterosaurs
editPterosaurs reported from the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Eurazhdarcho | E.langendorfensis | |||||
Hatzegopteryx | H.thambema |
Mammals
editMammals from the Sânpetru Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Barbatodon | B. transylvanicus | Kogaionid | ||||
Kogaionon | K. ungureanui | Kogaionid |
See also
editReferences
edit- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Solomon & Codrea, 2015, p.26
- ^ Solomon & Codrea, 2015, p.28
- ^ a b c d e f g h i j k l m n o p q r "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.
- ^ Csiki, Z.; Codrea, V.; Jipa-Murzea, C.; Godefroit, P. (2010). "A partial titanosaur (Sauropoda, Dinosauria) skeleton from the Maastrichtian of Nălaț-Vad, Hațeg Basin, Romania". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 258 (3): 297–324. doi:10.1127/0077-7749/2010/0098.
- ^ Mayr et al., 2019
- ^ a b "Table 9.1," in Weishampel, et al. (2004). Page 185.
- ^ Kessler et al., 2005
- ^ a b 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
edit- Mayr, Gerald; Codrea, Vlad; Solomon, Alexandru; Bordeianu, Marian; Smith, Thierry (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; Codrea, Vlad (2015), "Some Maastrichtan vertebrates from fluvial channel fill deposits at Pui (Hațeg Basin)", Muzeul Olteniei Craiova. Oltenia. Studii și comunicări. Științele Naturii, 31: 26–36, ISSN 1454-6914
- Kessler, E.; Grigorescu, D.; Csiki, Z. (2005), "Elopteryx revisited - A new bird-like specimen from the Maastrichtian of the Hațeg Basin (Romania)", Acta Palaeontologica Romaniae, 5: 249–258
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21