Where: Saratov, Russian Federation (44.7° N, 39.1° E: paleocoordinates 35.6° N, 35.6° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Rybushka Formation, Early/Lower Campanian (83.5 - 70.6 Ma)
• The majority of reptiles and birds come from Bed 5. The bones are light brown, considerably phosphatized, very dense, rolled, subject to bioerosion, with various orientations in the bed. The lower jaw of the polycotylid described was in the section directly above the phosphorite horizon
• group of beds-level stratigraphic resolution
Environment/lithology: marine; sandstone and burrowed, medium-grained, glauconitic, phosphatic, quartzose, green sandstone
•
•K2 Cmp 1–2 , Bed 5. Phosphoritic horizon. Phosphorite inclusions are distributed nonuniformly along the strike, forming in places lenticular accumulations. In some sites, the horizon is nonuniformly colored by reddish brown spots of iron hydroxide. The cementing matter is the psammitic component of the overlying bed. The boundary with the underlying bed is distinct, uneven. The bed has yielded teeth of sharks, dental plates of chimaerae, vertebrae of cartilaginous and bony fishes, bones of marine reptiles, pterosaurs, and birds (Hesperornites), abundant coprolites of aquatic vertebrates, fragments of molds of the gastropod Solariella sp., shells and imprints of the bivalves Monticulina sp., Gryphaeostrea sp., and Chlamys sp. The bed is 0.1–0.15 m thick.
Size class: macrofossils
Collected by E.V. Popov; N.N. Iljin; M.A. Grigor’ev; M.S. Arkhangelsky in 1991, 2004, 2005; reposited in the PIN
Collection methods: surface (in situ)
• Department of Historical Geology and Paleontology of Saratov State University (SGU)
Primary reference: M. S. Arkhangelsky, A. O. Averianov, and E. M. Pervushov. 2007. Short-necked plesiosaurs of the Family Polycotylidae from the Campanian of the Saratov Region. Paleontological Journal 41(6):656-660 [P. Mannion/J. Tennant/R. Benson]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 141001: authorized by Philip Mannion, entered by Jonathan Tennant on 20.03.2013, edited by Roger Benson, Matthew Carrano and Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
•The bed has yielded teeth of sharks, dental plates of chimaerae, vertebrae of cartilaginous and bony fishes, bones of marine reptiles, pterosaurs, and birds (Hesperornites), abundant coprolites of aquatic vertebrates, fragments of molds of the gastropod Solariella sp., shells and imprints of the bivalves Monticulina sp., Gryphaeostrea sp., and Chlamys sp
unclassified | |
Gastropoda | |
Solariella sp. Wood 1842 snail | |
Bivalvia | |
Monticulina sp. Ivanov 1995 oyster
Gryphaeostrea sp. Conrad 1865 oyster | |
Aves | |
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Reptilia | |
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