Bayan Tsav Obo (Ergilin Dzo sublocality) (Eocene of Mongolia)

Also known as Ergilin-Dzo; Bayan Tsab; Bayn Tsav Obo; Erghilyin-Dzo; Khetsoo Tsav

Where: Dornogov, Mongolia (43.4° N, 108.7° E: paleocoordinates 44.7° N, 103.9° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Ergilin Member (Ergilin Dzo Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; yellow sandstone

• Yellow sands

Size class: macrofossils

Collected by Geological Institute of the Mongolian Academy of Science in 1962; September 1989

Primary reference: D. Dashzeveg. 1996. Some Carnivorous Mammals from the Paleogene of Eastern Gobi Desert, Mongolia, and the application of Oligocene carnivores to stratigraphic correlation. American Museum Novitates 3179:1-14 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 176016: authorized by Philip Mannion, entered by Philip Mannion on 22.01.2016, edited by Pauline Coster

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Perissodactyla -
Symphysorrhachis brevirostris n. gen. n. sp.4 Belyaeva 1954 odd-toed ungulate
 Perissodactyla - Amynodontidae
Cadurcodon sp. Kretzoi 1942 odd-toed ungulate
 Perissodactyla - Hyracodontidae
Ardynia mongoliensis n. sp.4 Belyaeva 1952 odd-toed ungulate
PIN 473-25 - type
Armania asiana4 Gabunia and Dashzeveg 1988 odd-toed ungulate
PSS 17-31 and 32
 Perissodactyla - Rhinocerotidae
Ronzotherium orientale n. sp.4 Dashzeveg 1991 rhinoceros
PSS 21-15 - type
 Perissodactyla - Paraceratheriidae
Forstercooperia sp.4 Wood 1939 odd-toed ungulate
PSS 21-17
Forstercooperia ergiliinensis n. sp.4 Gabunia and Dashzeveg 1974 odd-toed ungulate
PSS 17-1 - type
 Perissodactyla - Chalicotheriidae
Schizotherium avitum1 Matthew and Granger 1923 chalicothere
LPGIN 21-(l)
 Artiodactyla - Anthracotheriidae
Bothriodon sp. Aymard 1846 anthracothere
 Artiodactyla - Entelodontidae
? Brachyhyops sp.7 Colbert 1937 even-toed ungulate
PIN 473-661; previously listed as Archaeotherium and Entelodon
 Carnivora - Nimravidae
Nimravus mongoliensis Gromova 1959 false sabre-tooth
PSS 21-34
 Carnivora - Amphicyonidae
Amphicyonidae indet.5 Haeckel 1886 bear-dog
MPC-M 30/63
 Creodonta - Hyaenodontidae
Hyaenodon sp.3, "Megalopterodon mongoliensis n. gen. n. sp." = Hyaenodon mongoliensis2, Hyaenodon pervagus6, Hyaenodon eminus2
Hyaenodon sp.3 Laizer and Parieu 1838 creodont
PST 21-41, PST 21-42
"Megalopterodon mongoliensis n. gen. n. sp." = Hyaenodon mongoliensis2 Dashzeveg 1964 creodont
PSS 21 - type
Hyaenodon pervagus6 Matthew and Granger 1924 creodont
PSS 21-25
Hyaenodon eminus2 Matthew and Granger 1925 creodont
PSS 31