Panchet Formation
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| Panchet Formation | |
|---|---|
| Stratigraphic range: Early Triassic, | |
| Type | Geological formation |
| Underlies | Supra Panchet Formation |
| Overlies | Raniganj Formation |
| Location | |
| Coordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Approximate paleocoordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | West Bengal, Jharkhand |
| Country | India |
The Panchet Formation is an Early Triassic geological formation from the Damodar Valley of India.[1][2]
It is among the few geological formations outside of Russia, South Africa, and China that documents the recovery of global ecosystems immediately after the Permian-Triassic extinction. It shares similar traits to some of these other formations, including the dominance of Lystrosaurus and the primary predators being proterosuchid reptiles. It also preserves a diversity of temnospondyl amphibians.[3][4]
Palaeobiota
[edit | edit source]Synapsids
[edit | edit source]| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
| Lystrosaurus |
L. murrayi |
A lystrosaurid dicynodont. Synonyms include L. orientalis and L. rajurkari. | 
| |||
| L. cf. curvatus | A lystrosaurid dicynodont. | |||||
| L. cf. declivis | A lystrosaurid dicynodont. | |||||
| Panchetocynodon | P. damodarensis | A cynodont of uncertain affinity. | ||||
| Thrinaxodon |
T. bengalensis |
A thrinaxodontid cynodont. | Considered a nomen nudum. The specimen is lost. |
Amphibians
[edit | edit source]| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
| ?Benthosuchidae indet. | ||||||
| Capulomala | C. panchetensis | A plagiosaurid temnospondyl. | ||||
| Gonioglyptus |
G. fragilis |
A trematosaurid temnospondyl. | ||||
| G. longirostris | ||||||
| Indobrachyops | I. panchetensis | A rhytidosteid temnospondyl. | 
| |||
| Indolyrocephalus | I. huxleyi | A trematosaurid. | ||||
| Lydekkerina | L. sp. | A lydekkerinid temnospondyl. | File:Lyddekerina1db.jpg | |||
| Pachygonia | P. incurvata | Possibly a brachyopid temnospondyl. | ||||
| Manubrantlia | M. khaki | A lapillopsid temnospondyl | File:Manubrantlia jaws.png | |||
| Tupilakosaurus | T. sp | A tupilakosaurid temnospondyl. | File:Tupilakosaurus.jpg |
Reptiles
[edit | edit source]| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
| Samsarasuchus | S. pamelae | A proterosuchid archosauriform. | ||||
| ?"Teratosaurus" | T. bengalensis | A dubious archosauriform represented by a single tooth, formerly considered a rauisuchian but most likely a proterosuchid.[3] | ||||
| Ankistrodon | A. indicus | Dubious proterosuchid. | ||||
| Neodiapsida indet. | A non-archosauromorph diapsid, known from an ilium.[4] |
Fish
[edit | edit source]| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|---|---|---|---|---|---|---|
| Acrolepidae indet. | An acrolepid fish. | |||||
| Perleididae indet. | A perleidid fish. | |||||
| Chondrichthyes indet. | A cartilaginous fish. | |||||
| Ceratodontidae indet. | A ceratodontid lungfish. |
See also
[edit | edit source]- Yerrapalli Formation - Middle Triassic (Anisian?) of the Pranhita–Godavari Basin
- Denwa Formation - Middle Triassic (Anisian?) of the Satpura Basin
- Tiki Formation - Late Triassic (Carnian?) of the Rewa Basin
- Lower Maleri Formation - Late Triassic (Carnian?) of the Pranhita–Godavari Basin
- Upper Maleri Formation - Late Triassic (Norian?) of the Pranhita–Godavari Basin
- Lower Dharmaram Formation - Late Triassic (Norian-Rhaetian?) of the Pranhita–Godavari Basin
References
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