Bayn Shire [HMNS-GIN] (Cretaceous to of Mongolia)

Where: Dornogov, Mongolia (44.3° N, 109.9° E: paleocoordinates 46.5° N, 100.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Baynshire Formation, Cenomanian to Cenomanian (100.5 - 83.6 Ma)

• = Bayn Shire

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by HMNS-GIN in 1993, 1995–1996, 2008

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

Primary reference: M. Watabe, Y. Ariunchimeg, and D. Brinkman. 1997. Dinosaur egg nests and their sedimentary environments in Bayn Shire locality (Late Cretaceous), Eastern Gobi. Abstract of Report Meeting, Mongolia-Japan Joint Paleontological Expedition 11 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 108342: authorized by Matthew Carrano, entered by Matthew Carrano on 28.04.2011, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

 Tracheophyta -
Tracheophyta indet.7
petrified wood
Reptilia
 Dinosauria -
Dinosauria indet. Owen 1842 dinosaur
Two types of nests of dinosaur eggs were found. One nest yielded embryonic bones together with huge amount of shell debris. 960806 BS WTB/M-10, M-11, PJ-8,9,10; 960805 Bs NEST-1; 960805 BSLOC-II
 Theropoda -
Ornithomimosauria indet.4 ornithomimosaur
mass burial skeletons of many individual ornithomimids'; field no. 960804-5 BS TSGT
 Theropoda - Dendroolithidae
Dendroolithidae indet.1 Zhao and Li 1988 coelurosaur
large nest; 960805 BS WTB/M9
 Ornithischia -
Hadrosauroidea indet.5 ornithopod
080914 BS HRS (braincase), 080915 BS HRS (5 elements)
 Ornithischia - Hadrosauridae
Hadrosauridae indet.3 Cope 1869 hadrosaurid
'A bone-bed of ankylosaurs and hadrosaurs'; field no. 960807 BS ORK/UJ-3,4, 950805 BS PJ-2, 960804 BS
 Ornithischia -
Ankylosauria indet. Osborn 1923 ankylosaur
'A bone-bed of ankylosaurs and hadrosaurs'; 950805 BS PJ-1 (skull parts), 960803 BS ENK, 960807 BS ORK/M-12, 960807 BS ORK/UJ-2
 Ornithischia - Ankylosauridae
Ankylosauridae indet.5 Brown 1908 ankylosaurid
humerus, 080915 BS KHB; 080914 BS FJYM (8 elements), 080915 BS MB (humerus), 080915 BS FJYM (rib)
 Testudinata -
Testudinata indet. Oppel 1811 turtle
080914 BS BON (3 specimens)
 Testudines - Adocidae
Adocidae indet.2 Cope 1869 turtle
peripheral and costal bones
 Testudines - Trionychidae
Trionychidae indet.2 Gray 1825 softshell turtle
shell fragments
 Testudines - Lindholmemydidae
Lindholmemydidae indet.2 Chkhikvadze 1970 turtle
shell fragments
Lindholmemys sp.7 Riabinin 1935 turtle
nearly complete shell, 960731 BS SZK
 Testudines - Nanhsiungchelyidae
Nanhsiungchelyidae indet.2 Yeh 1966 turtle
peripheral and costal bones
 Mollusca -