PBDB Collection

Altan Ula IV [HMNS-GIN] (Cretaceous of Mongolia)

Where: Omnogov, Mongolia (43.6° N, 100.5° E: paleocoordinates 41.2° N, 89.5° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Upper Member (Nemegt Formation), Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; sandstone and mudstone

• "The beds with rich vertebrate fossils are alternation of sandstone and mudstone layers with fluvial origin."

Size classes: macrofossils, mesofossils

Collected by HMNS-GIN in 1993, 1997, 2006-2007

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

• HMNS-Hayashibara Museum of Natural Sciences

Primary reference: M. Watabe and S. Suzuki. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1993. Hayashibara Museum of Natural Sciences Research Bulletin 1:17-29 [R. Benson/R. Benson/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 127674: authorized by Roger Benson, entered by Roger Benson on 21.05.2012, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• Dinosaur eggshells were also collected. Dinosaur footprints were found.

Show authors, comments, and common names

Reptilia
Dinosauria -	Dinosauria indet.⁵ Dinosauria indet.⁵ Owen 1842 dinosaur 060908 AU-IV OTG, nest with eggs
Ornithischia -	Ankylosauria indet. Ankylosauria indet. Osborn 1923 ankylosaur scutes, skull roof
Ornithischia - Hadrosauridae	Hadrosauridae indet., Saurolophus angustirostris³ Hadrosauridae indet. Cope 1869 hadrosaurid digits Saurolophus angustirostris³ Rozhdestvensky 1952 hadrosaurine
Theropoda -	Theropoda indet. Theropoda indet. Marsh 1881 theropod digits, claws
Theropoda - Tyrannosauridae	Tarbosaurus sp.⁴ Tarbosaurus sp.⁴ Maleev 1955 tyrannosaurid one partial skeleton of Tarbosaurus
Theropoda -	? Oviraptorosauria indet.⁵ ? Oviraptorosauria indet.⁵ Barsbold 1976 maniraptoran 060908 AU-IV BON
Theropoda - Dendroolithidae	Dendroolithidae indet.⁶ Dendroolithidae indet.⁶ Zhao and Li 1988 coelurosaur
Theropoda - Deinocheiridae	Deinocheirus mirificus¹ Deinocheirus mirificus¹ Kielan-Jaworowska 1969 ornithomimosaur
Theropoda - Elongatoolithidae	Elongatoolithidae indet.⁶ Elongatoolithidae indet.⁶ Zhao 1975 theropod
Saurischia -	Sauropoda indet.⁵ Sauropoda indet.⁵ Marsh 1878 sauropod 060829 AU-IV TSI
Testudinata -	Testudinata indet. Testudinata indet. Oppel 1811 turtle shell fragments
Testudines - Lindholmemydidae	Mongolemys sp.² Mongolemys sp.² Khosatzky and Mlynarski 1971 turtle shell fragments
Bivalvia
-	"Pelecypoda indet." = Bivalvia "Pelecypoda indet." = Bivalvia Linnaeus 1758 clam

¹Lee et al. 2014; ²Suzuki and Narmandakh 2004; ³Tsogtbaatar and Chinzorig 2007; ⁴Watabe and Suzuki 2000; ⁵Watabe et al. 2010; ⁶Watabe et al. 2010