| Panchet Formation | |
|---|---|
| Stratigraphic range: Early Triassic, | |
| Type | Geological formation |
| Underlies | Supra Panchet Formation |
| Overlies | Raniganj Formation |
| Location | |
| Coordinates | 23°36′N 87°00′E / 23.6°N 87.0°E / 23.6; 87.0 |
| Approximate paleocoordinates | 55°30′S 60°12′E / 55.5°S 60.2°E / -55.5; 60.2 |
| Region | West Bengal, Jharkhand |
| Country | India |
The Panchet Formation is an Early Triassic geological formation from the Damodar Valley of India.12
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.34
Palaeobiota
Synapsids
| 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
| 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. | 
| |||
| Pachygonia | P. incurvata | Possibly a brachyopid temnospondyl. | ||||
| Manubrantlia | M. khaki | A lapillopsid temnospondyl | 
| |||
| Tupilakosaurus | T. sp | A tupilakosaurid temnospondyl. | 
|
Reptiles
| 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
| 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
See also
- 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
References
- Romano, Marco; Bernardi, Massimo; Petti, Fabio Massimo; Rubidge, Bruce; Hancox, John; Benton, Michael J. (2020). "Early Triassic terrestrial tetrapod fauna: a review". Earth-Science Reviews. 210 103331. doi:10.1016/j.earscirev.2020.103331.
- Bandyopadhyay, Saswati; Ray, Sanghamitra (2020-03-01). "Gondwana Vertebrate Faunas of India: Their Diversity and Intercontinental Relationships". Episodes. 43 (1): 438–460. doi:10.18814/epiiugs/2020/020028. ISSN 0705-3797.
- Ezcurra, Martín D.; Bandyopadhyay, Saswati; Sengupta, Dhurjati P.; Sen, Kasturi; Sennikov, Andrey G.; Sookias, Roland B.; Nesbitt, Sterling J.; Butler, Richard J. (25 October 2023). "A new archosauriform species from the Panchet Formation of India and the diversification of Proterosuchidae after the end-Permian mass extinction". Royal Society Open Science. 10 (10). doi:10.1098/rsos.230387. ISSN 2054-5703. PMC 10598453. PMID 37885992.
- Ezcurra, Martín D.; Bandyopadhyay, Saswati; Sen, Kasturi (March 2022). "A new faunistic component of the Lower Triassic Panchet Formation of India increases the continental non-archosauromorph neodiapsid record in the aftermath of the end-Permian mass extinction". Journal of Paleontology. 96 (2): 428–438. doi:10.1017/jpa.2021.100. ISSN 0022-3360.