Also known as Amtgai Khuduk
Where: Omnogov, Mongolia (43.1° N, 107.5° E: paleocoordinates 45.0° N, 98.1° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Baynshire Formation, Cenomanian to Cenomanian (100.5 - 83.6 Ma)
• = Bainshirenskaya, Bayn Shire
•
•Kurumada et al. 2020: Two meaningful calcite U–Pb ages were obtained; 95.9 ± 6.0 and 89.6 ± 4.0 Ma, which are consistent with published ages from the Bayn Shire Formation.
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Collected by SMPE in 1975; reposited in the PIN
Primary reference: S. M. Kurzanov and T. A. Tumanova. 1978. The structure of the endocranium in some Mongolian ankylosaurs. Paleontological Journal 1978(3):369-374 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 79724: authorized by Matthew Carrano, entered by Matthew Carrano on 19.03.2008, edited by Philip Mannion and Richard Butler
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
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Nanhsiungchelyidae indet.2 Yeh 1966 turtle Listed as Zangerlia sp. by Shuvalov and Chkhikvadze (1979)
Hanbogdemys sp.2 Sukhanov and Narmandakh 2006 turtle Listed as Basilemys orientalis by Sukhanov and Narmandakh (1977)
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"Shamosuchus ulgicus n. sp." = Shamosuchus gradilifrons4
"Shamosuchus ulgicus n. sp." = Shamosuchus gradilifrons4 Konzhukova 1954 crocodilian PIN 3458/501 - type (partial skull and jaws with associated dermal armour)
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Amtosaurus magnus n. gen. n. sp.
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Segnosaurus galbinensis n. gen. n. sp.3
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