Kalmakerchin (Jurassic of Kyrgyzstan)

Where: Jalal-Abad, Kyrgyzstan (41.1° N, 73.5° E: paleocoordinates 41.6° N, 78.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Balabansai Formation, Middle Jurassic (174.1 - 163.5 Ma)

• The mammal molar and ulna were found in the lowermost part of the red-colored interval of the Jurassic. The mammalian incisor or reptilian tooth came from the

•upper part of this interval and was found close to a distal fragment of a humerus of a frog and some other vertebrate remains. The locality where the incisor was found is situated 1 km west from the locality that yielded a molar and an ulna fragment.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; siliciclastic sediments

• The formation consists of multicolored (mostly red, also grey, bluish and greenish) sandstones, siltstones and clays.

Size class: macrofossils

Collected by L. A. Nessov et al in 1992

Collection methods: sieve,

• Housed in the Zoological Institute of the Russian Academy of Sciences in St. Petersburg

Primary reference: L. A. Nessov, Z. Kielan-Jaworowska, J. Hurum, A. O. Averianov, P. V. Fedorov, D. O. Potapov, and M. Froyland. 1994. First Jurassic mammals from Kyrgyzstan. Acta Palaeontologica Polonica 39(3):315-326 [R. Benson/R. Benson/J. Tennant]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138960: authorized by Philip Mannion, entered by Jonathan Tennant on 05.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Vertebrata -
 Salientia -
Anura indet. Fischer von Waldheim 1813 frog
Mammalia indet. Linnaeus 1758 mammal
Fragment of right ulna ZIN 79027
 Docodonta -
Docodonta indet. Kretzoi 1946 dodocont
Left upper molar fragment ZIN 79026