Bayn Dzak [PMPE] (Cretaceous of Mongolia)

Also known as Shabarakh Usu

Where: Omnogov, Mongolia (44.2° N, 103.7° E: paleocoordinates 41.8° N, 92.7° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Bayn Dzak Member (Djadokhta Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, concretionary, red, calcareous sandstone

• Vivid red, poorly cemented sandstone, with sandy concretions of variable size, small, white calcareous concretions occur.

Size class: macrofossils

Primary reference: Z. Kielan-Jaworowska. 1974. Multituberculate succession in the Late Cretaceous of the Gobi Desert (Mongolia). Palaeontologia Polonica 30:23-44 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28195: authorized by John Alroy, entered by Erin Leckey on 28.01.2003, edited by Roger Benson, Philip Mannion and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Anguidae
Bainguis parvus n. gen. n. sp.1
Bainguis parvus n. gen. n. sp.1 Borsuk-Bialynicka 1984 lizard
ZPAL MgR-II/46 (holotype), strongly damaged skull; ZPAL MgR-II/90, juvenile skull; ZPAL MgR-II/9, 10, 11, three fragments of a postcranial skeleton and body osteoscutes
 Squamata -
Gobekko cretacicus n. gen. n. sp.3 Borsuk-Bialynicka 1990 lizard
ZPAL MgR-II/4 (holotype skull), /43, /47 (partial skulls)
Globaura venusta2 Borsuk-Bialynicka 1988 lizard
ZPAL MgR-II/55 (large skull); 26, 42, 53 (small skulls)
Mammalia
 Tribosphenida -
Kennalestes gobiensis n. gen. n. sp.4
Kennalestes gobiensis n. gen. n. sp.4 Kielan-Jaworowska 1968 eutherian
ZPAL MgM-I/3 (holotype), I/2, I/5
 Tribosphenida - Zalambdalestidae
Zalambdalestes lechei4 Gregory and Simpson 1926 eutherian
Zalambdalestes grangeri4 Simpson 1928 eutherian
ZPAL MgM-I/14, I/16
 Multituberculata -
Bulganbaatar nemegtbaataroides n. gen. n. sp. Kielan-Jaworowska 1974 multituberculate
ZPAL MgM-I/25 (holotype partial skull)
Taeniolabidoidea indet.5 multituberculate
ZPAL MgM-I/165 (postcrania)