Aral Formation
The Aral Formation is a geologic formation in Kazakhstan. It preserves fossils dating back to the Neogene period.[1] Much of its fossils consist of Glires and fish, though cetaceans and cryptobranchid salamanders are also known.
| Aral Formation | |
|---|---|
| Stratigraphic range: Oligocene – Miocene | |
| Type | Formation |
| Location | |
| Coordinates | 50.3° N, 57.2° E W[1] |
| Region | Aktyubinsk |
| Country | Kazakhstan |
Paleobiota
The Aral Formation has yielded a rich variety of extinct mammals. Many of its mammal fauna consists of the clade Glires with rodents being particularly numerous.[1]
Chondrichthyes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Odontaspis[1] | Species indeterminate | A sand tiger shark. | |
Osteichthyes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Acipenser[1] | Species indeterminate | A sturgeon. | |
| Cyprinidae indet.[1] | Genus and species indeterminate | A carp. | |
| Esox[1] | E. aralensis | A pike. | |
| Percidae indet.[1] | Gensu and species indeterminate | A perch. | |
Urodela
| Genus | Species | Notes | Images |
|---|---|---|---|
| Cryptobranchidae indet.[1] | Genus and species indeterminate. | A giant salamander. | |
Rodents
| Genus | Species | Notes | Images |
|---|---|---|---|
| Aralocricetodon[1] | A. schokensis | A cricetid. | |
| Asianeomys[1] | A. bolligeri. | An eomyid. | |
| Eumyarion[1][2] | E. tremulus | A mouse. | |
| Eucricetodon[1][2] | E. occasionalis | A mouse. | |
| Plesiosminthus[1] | P. tereskentensis | A jumping mouse. | |
| Propalaeocastor[1] | P. kumbulakensis | A castorid. | |
Lagomorpha
| Genus | Species | Notes | Images |
|---|---|---|---|
| Desmatolagus | D. gobiensis, D. simplex, D. periaralicus. | A rabbit. | |
Eulipotyphla
| Genus | Species | Notes | Images |
|---|---|---|---|
| Amphechinus | A. minimus | A hedgehog. | |
| Desmaninae indet. | Indeterminate genus and species. | A desman. | |
| Gobisorex | G. kingae. | A shrew. | |
| Talpidae indet. | Indeterminate genus and species. | A mole. | |
Cetacea
| Genus | Species | Notes | Images |
|---|---|---|---|
| Delphinidae indet. | Indeterminate genus and species. | A dolphin. | |
References
- Fossilworks: Altynshokysu (bone bed I). Fossilworks.org. Retrieved 2021-04-07.
- A. V. Lopatin. 1996. "The Stratigraphy and Small Mammals from the Aral Formation, the Altynshokysu Locality, Northern Aral Area." Stratigraphy and Geological Correlation. 4 (2): 65-79.
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