Bayn Dzak [MPE/SMPE] (PIN coll. 614) (Cretaceous of Mongolia)

Also known as Shabarak Usu, Bayan Zag

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: eolian; red sandstone

• "red desert sand"

Size classes: macrofossils, mesofossils

Collected by MPE in 1946, 1948, 1967–1968; reposited in the PIN

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

• led by I. A. Yefremov (Efremov)

Primary reference: E. A. Maleev. 1952. Novoe semeystvo pantsirnich dinosavrov is verchnego mela Mongolii [A new family of armored dinosaurs from the Upper Cretaceous of Mongolia]. Doklady Akademii Nauk SSSR 87(1):131-134 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 53229: authorized by Matthew Carrano, entered by Matthew Carrano on 07.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
  - Prismatoolithidae
Protoceratopsidovum fluxuosum2 Mikhailov 1994 dinosaur
= P2 group eggs
Protoceratopsidovum sincerum n. gen. n. sp.2 Mikhailov 1994 dinosaur
PIN 614/58
 Avetheropoda - Ornithomimidae
Ornithomimidae indet. Marsh 1890 ornithomimid
 Saurischia - Elongatoolithidae
Elongatoolithidae indet.3 Zhao 1975 theropod
E1 group eggs
 Ornithischia - Ankylosauridae
"Syrmosaurus viminocaudus n. gen. n. sp." = Pinacosaurus grangeri
"Syrmosaurus viminocaudus n. gen. n. sp." = Pinacosaurus grangeri Gilmore 1933 ornithischian
PIN AS 614
 Neornithischia - Protoceratopsidae
"Protoceratops andrewsi" = Protoceratops andrewsi1, "Bainoceratops efremovi n. gen. n. sp." = Protoceratops andrewsi6, Bagaceratops sp.5
"Protoceratops andrewsi" = Protoceratops andrewsi1 Granger and Gregory 1923 ornithischian
PIN 614/6, 9, 15, 31, 32, 35, 61
"Bainoceratops efremovi n. gen. n. sp." = Protoceratops andrewsi6 Granger and Gregory 1923 ornithischian
Bagaceratops sp.5 Maryanska and Osmólska 1975 ornithischian
PIN 614/29, 34, 53
 Neornithischia - Spheroolithidae
Spheroolithidae indet.3 Zhao 1979 bird foot dinosaur
S2 Group; PIN 614/600
 Neornithischia - Hadrosauridae
Hadrosauridae indet.4 Cope 1869 hadrosaurid
PIN 2970/6, angusticanaliculate eggs