PBDB Collection

Bayn Dzak, site 2 [PMPE] (Cretaceous of Mongolia)

Also known as Polish-Mongolian Palaeontological Expeditions 2/3

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

• coordinate stated in text

• outcrop-level geographic resolution

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

• one 10-m thick bed

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, concretionary, brown, red, calcareous sandstone

• "orange to moderate reddish-brown sands, containing scattered small reddish-brown sandstone nodules, known as 'concretions'. The sands have practically no cement. The cement of the nodules is calcareous...The known thickness of this layer is about 10 metres. The sands are particularly unresistant to weathering because of their poor cementation. Locally thin layers of hard, cemented orange-pink sandstone occur within this horizon, in the Main Mammal Field"

Size class: macrofossils

Preservation: concretion

Collected by PMPE II-III in 1964-1965

Collection methods: quarrying, mechanical,

Primary reference: Z. Kielan-Jaworowska and K. Kowalski. 1965. Polish-Mongolian Palaeontological Expeditions to the Gobi Desert in 1963 and 1964. Bulletin de l'Académie Polonaise des Sciences, Cl. II 13(3):175-179 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 37013: authorized by Matthew Carrano, entered by Matthew Carrano on 23.02.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Mammalia
Theriamorpha - Zalambdalestidae	Zalambdalestes sp. Zalambdalestes sp. Gregory and Simpson 1926 eutherian ZPAL MgM-I/4 (incomplete right lower jaw described by Kielan-Jaworowska 1969)
Multituberculata - Djadochtatheriidae	"Kryptobaatar dashzevegi n. gen. n. sp." = Kryptobaatar dashzevegi¹, "Gobibaatar parvus n. gen. n. sp." = Kryptobaatar dashzevegi¹, Djadochtatherium sp. "Kryptobaatar dashzevegi n. gen. n. sp." = Kryptobaatar dashzevegi¹ Kielan-Jaworowska 1969 multituberculate 22 specimen according to Kielan-Jawaorowska & Hurum (1997), includes ZPAL MgM-I/21, MgM-I/8, MgM-I/10, MgM-I/52 "Gobibaatar parvus n. gen. n. sp." = Kryptobaatar dashzevegi¹ Kielan-Jaworowska 1969 multituberculate Djadochtatherium sp. Simpson 1925 multituberculate
Multituberculata - Sloanbaataridae	Sloanbaatar mirabilis n. gen. n. sp.¹, Kamptobaatar kuczynskii n. gen. n. sp.¹ Sloanbaatar mirabilis n. gen. n. sp.¹ Kielan-Jaworowska 1969 multituberculate Kamptobaatar kuczynskii n. gen. n. sp.¹ Kielan-Jaworowska 1969 multituberculate
Reptilia
Squamata - Polyglyphanodontidae	Adamisaurus magnidentatus n. gen. n. sp.³ Adamisaurus magnidentatus n. gen. n. sp.³ Sulimski 1972 squamates ZPAL MgR-II/80 (holotype skull)
Dinosauria -	Dinosauria indet. Dinosauria indet. dinosaur eggs and nests
Ornithischia - Protoceratopsidae	Protoceratops andrewsi Protoceratops andrewsi Granger and Gregory 1923 ceratopsian
Ornithischia - Ankylosauridae	Pinacosaurus grangeri² Pinacosaurus grangeri² Gilmore 1933 ankylosaurid ZPAL MgR-II/1

¹Kielan-Jaworowska 1969; ²Maryanska 1971; ³Sulimski 1972