Also known as Zos Wash
Where: Omnogov Aimak, Mongolia (43.7° N, 100.9° E: paleocoordinates 40.9° N, 90.2° E)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Djadokhta Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• stratigraphically below Ukhaa Tolgod
•
•Dashzeveg et al. 2005: The quick stratigraphic succession of normal and reversed magnetozones suggests, but does not clearly establish, that the sediments may have been deposited during the rapid sequence of polarity changes in the late part of the Campanian between about 75 to 71 Ma.
Environment/lithology: fluvial; red sandstone
Size class: macrofossils
Collected in 1993-1996; reposited in the AMNH
Collection methods: surface (float), surface (in situ), mechanical,
Primary reference: K. Gao and M. A. Norell. 2000. Taxonomic composition and systematics of Late Cretaceous lizard assemblages from Ukhaa Tolgod and adjacent localities, Mongolian Gobi Desert. Bulletin of the American Museum of Natural History 249:1-118 [J. Alroy/E. Leckey/R. Benson]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 68517: authorized by Matthew Carrano, entered by Matthew Carrano on 25.01.2007, edited by Philip Mannion and Roger Benson
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
cf. Zalambdalestes sp.4 Gregory and Simpson 1926 eutherian PSS-MAE 131, articulated skeleton and skull with attached lower jaws
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Reptilia | |
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Ctenomastax parva n. gen. n. sp., Isodontosaurus gracilis
Ctenomastax parva n. gen. n. sp. Gao and Norell 2000 squamates | |
Zaraasuchus shepardi n. gen. n. sp.2
Zaraasuchus shepardi n. gen. n. sp.2 Pol and Norell 2004 crocodilian IGM 100/1321 - holotype (posterior region of the skull and lower jaws preserved in articulation with cervical vertebrae, osteoderms, and forelimb elements)
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Zosuchus davidsoni n. gen. n. sp.3
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Protoceratopsidae indet. Granger and Gregory 1923 ceratopsian |