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Sânpetru Formation

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
Stratigraphic range: Early Maastrichtian
~70–68 Ma
↓
Sibișel River near the Sânpetru Formation
TypeGeological formation
Sub-unitsLower & Upper Members
UnderliesMiocene deposits
OverliesStrei Formation, flysch
Thickness2,500 m (8,200 ft)
of which 860 m (2,820 ft) exposed
Lithology
PrimaryMudstone, sandstone
OtherConglomerate
Location
Coordinates45°36′N 22°54′E / 45.6°N 22.9°E / 45.6; 22.9
Approximate paleocoordinates30°30′N 22°06′E / 30.5°N 22.1°E / 30.5; 22.1
RegionHunedoara
Country Romania
ExtentCentral Hațeg Basin
Type section
Named forSânpetru
Sânpetru Formation is located in Romania
Sânpetru Formation
Sânpetru Formation (Romania)

Description

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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

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Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Amphibians

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Amphibians of the Sânpetru Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Albanerpeton Indeterminate Albanerpetontid
Paralatonia P. transylvanica Frog

Turtles

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Turtles of the Sânpetru Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Kallokibotion K. bajazidi
Dortokidae Indeterminate
Emydidae Indeterminate

Squamates

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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

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Crocodyliformes of the Sânpetru Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Allodaposuchus[3] Indeterminate
Sabresuchus S. sympiestodon

Ornithischians

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Ornithischians 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

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Sauropods 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
 
Dorsal vertebra of Paludititan

Theropods

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Theropods 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

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Pterosaurs reported from the Sânpetru Formation
Genus Species Location Stratigraphic position Material Notes Images
Eurazhdarcho E.langendorfensis
 
Hatzegopteryx H.thambema
 

Mammals

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Mammals from the Sânpetru Formation
Genus Species Location Stratigraphic position Material Notes Images
Barbatodon B. transylvanicus Kogaionid
Kogaionon K. ungureanui Kogaionid

See also

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References

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  1. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  2. ^ Solomon & Codrea, 2015, p.26
  3. ^ Solomon & Codrea, 2015, p.28
  4. ^ 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.
  5. ^ Solomon & Codrea, 2015, p.30
  6. ^ "Table 20.1," in Weishampel, et al. (2004). Page 439.
  7. ^ 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.
  8. ^ Mayr et al., 2019
  9. ^ a b "Table 9.1," in Weishampel, et al. (2004). Page 185.
  10. ^ Kessler et al., 2005
  11. ^ a b Listed as "cf. Euronychodon sp." in "29.3 Judetul Hunedoara, Romania; 1. Sânpetru Formation," in Weishampel, et al. (2004). Pages 592-593.
  12. ^ "Table 9.1," in Weishampel, et al. (2004). Page 186.
  13. ^ "Table 4.1," in Weishampel, et al. (2004). Page 78.

Bibliography

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  • 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
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