Sânpetru Formation
Sânpetru Formation
Stratigraphic range : Early Maastrichtian ~70–68 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Sub-units Lower & Upper Members
Underlies Miocene depositsOverlies Strei Formation, flysch Thickness 2,500 m (8,200 ft) of which 860 m (2,820 ft) exposed
Lithology
Location
Coordinates 45°36′N 22°54′E/45.6°N 22.9°E/ 45.6; 22.9
Approximate paleocoordinates 30°30′N 22°06′E/30.5°N 22.1°E/ 30.5; 22.1
Extent Central Hațeg Basin Type section
The Sânpetru Formation is an early Maastrichtian geologic formation located in Romania , near Sânpetru village, part of Sântămăria-Orlea commune. Dinosaur remains are among the fossils that have been recovered from the formation, comprising some of the fauna of Hațeg Island .
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 .
Fossil content 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.Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Amphibians Amphibians of the Sânpetru FormationGenus Species Location Stratigraphic position Abundance Notes Images Albanerpeton Indeterminate Albanerpetontid Paralatonia P. transylvanica Frog
Turtles Turtles of the Sânpetru FormationGenus Species Location Stratigraphic position Abundance Notes Images Kallokibotion K. bajazidi Dortokidae Indeterminate Emydidae Indeterminate
Squamates Squamates 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 Indeterminate Sabresuchus S. sympiestodon
Ornithischians Ornithischians of the Sânpetru FormationGenus Species Location Stratigraphic position Abundance Notes Images Struthiosaurus S. transylvanicus Sânpetru A skull and partial skeleton. A nodosaur . Telmatosaurus T. transsylvanicus "[Five to ten] fragmentary skulls, some with associated postcrania, mixed age classes." A small hadrosauromorph. Zalmoxes Z. robustus Many remains Originally identified as a rhabdodontid ornithopod, but possibly a ceratopsian closely related to Ajkaceratops Ferenceratops Ferenceratops F. shqiperorum Sibișel Valley Upper A left dentary, sacrum, right scapula, right coracoid, partial left ilium, partial right ilium, right ischium, left distal ischium and left femur. Originally "Zalmoxes " shqiperorum but subsequently recognized as a distinct ceratopsian taxon closely related to Ajkaceratops
Sauropods Sauropods of the Sânpetru FormationGenus Species Location Stratigraphic position Abundance Notes Images Magyarosaurus M. dacus A dwarf sauropod. Paludititan P. nalatzensis A partial skeleton lacking the skull. A dwarf sauropod Dorsal vertebra of Paludititan Petrustitan P. hungaricus Sibișel River Valley. Upper Partial skeleton composed of caudal vertebrae, right ulna, right radius, right metacarpal, right ilium, and left fibula. A dwarf sauropod, originally assigned to the genus Magyarosaurus
Theropods Theropods of the Sânpetru FormationGenus Species Location Stratigraphic position Material Notes Images Gargantuavis Indeterminate Pelvis Bradycneme B. draculae "Distal tibiotarsus." Elopteryx E. nopcsai "Fragmentary femur." Euronychodon Indeterminate Heptasteornis H. andrewsi "Distal tibiotarsus." Megalosaurus M. hungaricus "Tooth."
Pterosaurs Pterosaurs reported from the Sânpetru FormationGenus Species Location Stratigraphic position Material Notes Images Eurazhdarcho E.langendorfensis An azhdarchid pterosaur. Hatzegopteryx H.thambema A giant azhdarchid pterosaur.
Mammals Mammals from the Sânpetru FormationGenus Species Location Stratigraphic position Material Notes Images Barbatodon B. transylvanicus Kogaionid Kogaionon K. ungureanui Kogaionid
See also Bibliography 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 : Solomon, Alexandru; Codrea, Vlad (2015), "Some Maastrichtian vertebrates from fluvial channel fill deposits at Pui (Hațeg Basin)", Muzeul Olteniei Craiova. Oltenia. Studii și comunicări. Științele Naturii , 31 : 26–36, ISSN 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), , Berkeley: University of California Press , pp. 1–880, ISBN 0-520-24209-2