Izhberda Quarry (Cretaceous of Russian Federation)

Also known as Orsk

Where: Orenburg, Russian Federation (51.3° N, 57.6° E: paleocoordinates 43.5° N, 50.6° E)

• coordinate stated in text

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lenticular, ferruginous, glauconitic, pebbly, phosphatic, quartzose sandstone and phosphatic conglomerate

• Bone-bearing deposits with a thickness of 0.2–1.5 m are ...represented by lenticular bodies of quartz–glauconite sand with phosphorites, pebbles, and ferruginization, which change for denser sandstones and phosphorite conglomerate at the top

Size class: macrofossils

Collected by Club of Young Geologists at the Palace of Pioneers and Schoolchildren of Orsk, headed by G.A. Sopots’ko and A.V. Nikiforov in 2012–

Collection methods: surface (in situ),

Primary reference: V. M. Efimov, I. A. Meleshin, and A. V. Nikiforov. 2016. A New Species of the Plesiosaur Genus Polycotylus from the Upper Cretaceous of the Southern Urals. Paleontological Journal 50(5):494-503 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 224094: authorized by Patricia Holroyd, entered by Patricia Holroyd on 13.01.2022, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Belemnitida - Belemnitellidae
Belemnitella mucronata Schlotheim 1813 belemnite
Chondrichthyes
 Chimaeriformes -
Chimaeriformes indet. Obruchev 1953 chimaera
"chimaera fauna"
Reptilia
 Dinosauria -
Dinosauria indet.3 Owen 1842 dinosaur
OShMM 25
 Ornithischia -
Iguanodontia indet.1 Baur 1891 ornithopod
OShMM 403, vertebra, phalanx
 Pterosauria - Azhdarchidae
Azhdarchidae indet.2 Nessov 1984 pterosaur
OShMM 530 and 531
 Plesiosauria - Polycotylidae
Polycotylus sopozkoi n. sp. Efimov et al. 2016 plesiosaur
holotype, UPM 247
Osteichthyes
 Iniomi -
Chondrichthyes indet. bony fish
"shark teeth"