Balabansai Formation
| Balabansai Formation | |
|---|---|
Ma | |
| Type | Ongtustik Qazaqstan oblysy, Jalal-Abad Region |
| Country |  Kazakhstan Kyrgyzstan Uzbekistan |
  Balabansai Formation (Kyrgyzstan) | |
The Balabansai Formation (sometimes
formation in Kazakhstan, Kyrgyzstan and Uzbekistan whose strata date back to the Bathonian and Callovian stages of the Middle Jurassic. Dinosaur remains are among the fossils that have been recovered from the formation.[2] The lithology primarily consists of variegated sandstones, siltstones, claystones, and rare gravels and marls.[3] Many taxa have been found in the formation, including amphibians[4] and mammals[5]
Vertebrate paleofauna
Indeterminate Avialae remains located in
Ongtustik Qazaqstan Oblysy, Kazakhstan.[2]
Fish
| Fish of the Balabansai Formation | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
| Ferganamia | F. verzilini | A bowfin | ||
| Ferganoceratodus | F. jurassicus | A lungfish | ||
| Palaeobates | P. verzilini | An elasmobranch
| ||
| Polyacrodus | P. balabansaiensis, P. prodigialis | A hybodont
| ||
Amphibians
| Amphibians of the Balabansai Formation | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
Ferganobatrachus[6]
|
F. riabinini | Temnospondyl | ||
| Kokartus | K. honorarius | Salamander | ||
Turtles
| Turtles of the Balabansai Formation | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
| Toxocheloides | T. narynensis | |||
| Xinjiangchelys | X. tianshanensis, X. latimarginalis | Xinjiangchelydae | ||
Lizards
| Lizards of the Balabansai Formation | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
| Changetisaurus | C. estesi | Relative of Dorsetisaurus | ||
| Lacertilia | Indeterminate | |||
Choristoderes
| Choristoderes of the Balabansai Formation | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
| Choristodera | Indeterminate | Similar to Cteniogenys | ||
Crocodyliformes
| Crocodyliformes | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
| Sunosuchus | Indeterminate | |||
Dinosaurs
| Dinosaurs | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | |
|
P. sharovi[2] |
Geographically located in Ongtustik Qazaqstan Oblysy, Kazakhstan.[2]
|
||||
| Ferganasaurus[7] | F. verzilini | Located within Kyrgyzstan | Basal Sauropod | ||
| Ferganocephale[3] | F. adenticulatum | Located within Kyrgyzstan | Dubious taxon, Neornithischia indet. | ||
| Neosauropoda indet.[3] | Family, genus and species indeterminate | Kyrgyzstan | A heavily worn tooth, the apex of a tooth crown, a left metatarsal I, and a right manual phalanx | ||
| Tetanurae indet.[3] | Family, genus and species indeterminate | Kyrgyzstan | Dozens of teeth | ||
| Stegosauria indet.[8] | Family, genus and species indeterminate | Kyrgyzstan | Four posterior dorsal vertebrae | May be as old as Ferganastegos " by Roman Ulansky.
| |
Pterosaurs
| Mammals | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
Rhamphorhynchinae indet.[3]
|
Genus and species indeterminate | Kyrgyzstan | ||
Mammals
| Mammals | ||||
|---|---|---|---|---|
| Genus | Species | Presence | Notes | |
| Ferganodon | F. cf. naryensis | A eutriconodont | ||
| Paritatodon | Indeterminate | A docodont or a shuotheriid | ||
| Simpsonodon | Indeterminate | A docodont, multiple species present | ||
| Tashkumyrodon[9] | T. desideratus | A docodont | ||
| Amphilestidae | Indeterminate | |||
Amphitheriidae
|
Indeterminate | |||
| Docodonta | Indeterminate | |||
| Paurodontidae | Indeterminate | |||
Tegotheriidae
|
Indeterminate | |||
| Tinodontidae | Indeterminate | |||
| Triconodontidae | Indeterminate | |||
Invertebrate paleofauna
Molluscs
| Genus | Species | Presence | Notes |
|---|---|---|---|
| Proparreysia[10] | "P. thashkumyrica" | A bivalve
| |
| Sulcatapex[10] | "S. chatkalica" | A bivalve | |
| Yeniella[10] | "Y. asiatica", "Y. sculpturata" | A bivalve |
Flora
Conifers
| Genus | Species | Presence | Notes |
|---|---|---|---|
| Podozamites[10] | P. lanceolatus |
Ferns
| Genus | Species | Presence | Notes |
|---|---|---|---|
| Cladophlebis[10] | C. whitbiensis | ||
| Coniopteris[10] | C. furssenkoi, C. hymenophylloides |
See also
- List of dinosaur-bearing rock formations
References
- ^ ISSN 1342-937X.
- ^ ISBN 0-520-24209-2.
- ^ S2CID 55249438.
- S2CID 140159226.
- S2CID 128716878.
- ISSN 0031-0239.
- S2CID 85902362.
- S2CID 129163170.
- S2CID 55118845.
- ^ a b c d e f Кузичкина, Ю. М. (1979). "Балабансайская Свита". In Министерство геологии СССР (ed.). Стратиграфический словарь СССР: Триас, Юра, Мелсборник [Stratigraphic Dictionary of the USSR: Triassic, Jurassic, Cretaceous] (PDF). Leningrad: Недра. p. 49.