Chakpaktas fauna (Eocene of Kazakhstan)

Also known as Chakpaktassk; Lake Zaysan

Where: Kazakhstan (48.0° N, 84.0° E: paleocoordinates 48.6° N, 78.1° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Chakpaktas Formation, Arshantan (48.6 - 37.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: L. K. Gabuniya. 1983. Chakpaktasskaya fauna eotsenovykh mlekopitayushchikh [The Chakpaktassk fauna of the Eocene mammals]. Transactions (Doklady) of the USSR Academy of Sciences: Earth Sciences Sections 273(2):456-458 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 31009: authorized by John Alroy, entered by Erin Leckey on 03.04.2003, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Perissodactyla -
cf. Homogalax sp. Hay 1899 odd-toed ungulate
Isectolophus latitdens3 odd-toed ungulate
KAN K-35 and 69
 Perissodactyla - Lophialetidae
Lophialetes sp.1 Matthew and Granger 1925 odd-toed ungulate
Schlosseria sp.1 Matthew and Granger 1926 odd-toed ungulate
 Perissodactyla - Hyracodontidae
"Rhodopagus aff. minutissimus" = Pataecops minutissimus, Triplopus sp.
"Rhodopagus aff. minutissimus" = Pataecops minutissimus Reshetov 1979 odd-toed ungulate
Triplopus sp. Cope 1880 odd-toed ungulate
"new species"
 Perissodactyla -
Helaletes sp. Marsh 1872 odd-toed ungulate
"new species", Helates (sic)
 Perissodactyla - Helaletidae
Helaletidae indet. Osborn 1892 odd-toed ungulate
 Carnivora - Miacidae
cf. Miacis sp. Cope 1872 carnivoran
 Ungulata - Uintatheriidae
Gobiatherium mirificum2 Osborn and Granger 1932 uintathere
 Ungulata -
Dichobunoidea indet. Gill 1872 even-toed ungulate
"new genus and species"