Shirokii Karamysh 2 (bed 2) (Cretaceous of Russian Federation)

Also known as Shyrokyi Karamysh

Where: Saratov, Russian Federation (51.4° N, 45.0° E: paleocoordinates 42.6° N, 40.0° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Rybushka Formation, Early/Lower Campanian (83.5 - 70.6 Ma)

• Phosphatic conglomerate up to 400 mm thick. Shark fauna is characteristic of the Early Campanian, and bed 3 in a nearby exposure yields Belemnitella mucronata, which co-occurs with the sharks in Early Campanian phosphatic chalks in the Paris basin.

• bed-level stratigraphic resolution

Environment/lithology: shoreface; bioturbated, glauconitic, nodular, phosphatic, black, brown sandstone

• "active sublittoral zone"
• "Phosphorite horizon: the upper part is composed of bright green, quartz–glauconitic, strongly bioturbinated sand, with phosphorites up to 0.5–1 cm in size, regularly scattered and slightly accumulated in the roof. In the lower part, phosphorites are dark brown, black, sabulous, and angular and black, more rounded. Phosphorites and phosphorite accumulations are abundant. In places, phosphorite inclusions are widely spaced; in some sites (up to 1.5–2.5 m in size), they are accumulated, smaller in size, 1–1.5 cm in diameter. The grayish yellow and grayish brown aleuritic inclusions are more rounded, with signs of bioerosion, more widely spaced and mostly smaller in size." Fossils in lower portion.

Size class: macrofossils

Preservation: replaced with phosphate

Collected by M.A. Grigor’ev, A.L. Gorbunov-Gusev, & A.N. Gurenko in 2004-2005

• Repository: Saratov State University

Primary reference: A. O. Averianov, M. S. Arkhangelsky, and E. M. Pervushov. 2008. A new Late Cretaceous azhdarchid (Pterosauria, Azhdarchidae) from the Volga region. Paleontological Journal 42(6):634-642 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 86332: authorized by Matthew Carrano, entered by Matthew Carrano on 29.01.2009, edited by Matthew Clapham and Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Odontaspididae
Eostriatolamia ex gr. subulata Agassiz 1843 sand tiger shark
 Lamniformes -
"Pseudoisurus arcuatus" = Pseudisurus
"Pseudoisurus arcuatus" = Pseudisurus mackerel shark
 Lamniformes - Pseudocoracidae
Pseudocorax laevis Leriche 1906 mackerel shark
 Lamniformes - Otodontidae
Cretolamna borealis Priem 1897 mackerel shark
 Chimaeriformes - Edaphodontidae
Edaphodon sp. Buckland 1838 chimaera
 Chimaeriformes - Rhinochimaeridae
Amylodon karamysh n. sp. Averianov and Popov 1995 chimaera
 Chimaeriformes - Callorhynchidae
Ischyodus cf. bifurcatus Case 1978 plownose chimaera
Reptilia
 Squamata - Mosasauridae
Prognathodon sp. Dollo 1889 mosasaur
? Clidastes sp. Cope 1868 mosasaur
 Pterosauria - Pteranodontidae
Volgadraco bogolubovi n. gen. n. sp.
Volgadraco bogolubovi n. gen. n. sp. Averianov et al. 2008 pterosaur
SGU nos. 46-50/104a, partial mandible, cervical vertebrae, notarium, femur
 Plesiosauria - Polycotylidae
Polycotylidae indet. Williston 1908 plesiosaur
 Plesiosauria - Elasmosauridae
Elasmosauridae indet. Cope 1869 elasmosaur
Actinopteri
 Aulopiformes - Enchodontidae
Enchodontidae indet. Woodward 1901