# Indobrachyops

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Extinct genus of amphibians

Indobrachyops Temporal range: Early Triassic, Induan PreꞒ Ꞓ O S D C P T J K Pg N Restoration of Indobrachyops panchetensis Scientific classification Kingdom: Animalia Phylum: Chordata Clade: Tetrapoda Order: †Temnospondyli Suborder: †Stereospondyli Family: †Rhytidosteidae Subfamily: †Derwentiinae Genus: †Indobrachyops Von Huene and Sahni, 1958 Type species †Indobrachyops panchetensis Von Huene and Sahni, 1958

***Indobrachyops*** is an extinct [genus](/source/Genus) of [temnospondyl](/source/Temnospondyl) amphibian from the [Early Triassic](/source/Early_Triassic) of India. It is known from a nearly complete fossil skull that was first described by paleontologists [Friedrich von Huene](/source/Friedrich_von_Huene) and M. R. Sahni in 1958 from the [Panchet Formation](/source/Panchet_Formation) in [Raniganj Coalfield](/source/Raniganj_Coalfield).[1] *Indobrachyops* belongs to a group of mostly semi-aquatic temnospondyls called [Stereospondyli](/source/Stereospondyli), but its exact placement within the group has been uncertain since its first description.

## Classification

Huene and Sahni considered *Indobrachyops* to be part of the family [Brachyopidae](/source/Brachyopidae), which includes several aquatic temnospondyls with large rounded heads. However, later studies noted several features of *Indobrachyops* that set it apart from brachyopids, including closely spaced nostrils and a different pattern of pits and grooves on the [skull roof](/source/Skull_roof). In 1979, J. W. Cosgriff and J. M. Zawiskie placed *Indobrachyops* in a new family called **Indobrachyopidae** along with the poorly known temnospondyls *[Mahavisaurus](/source/Mahavisaurus)* and *[Rewana](/source/Rewana)*. The [lacrimal bone](/source/Lacrimal_bone) in the skull is an important feature in classifying stereospondyls, but its presence has been difficult to judge in the single known skull of *Indobrachyops*. One study suggested that it lacked a lacrimal, which it used as evidence to reclassify *Indobrachyops* within the family [Rhytidosteidae](/source/Rhytidosteidae). In 1998 paleontologists Anne Warren and Claudia Marsicano proposed that it did have a lacrimal, albeit a very small one that suggested a primitive position for *Indobrachyops* within Rhytidosteidae. A [phylogenetic](/source/Phylogenetic) analysis of rhytidosteids by Marsicano and Sérgio Dias-da-Silva in 2011 supported the inclusion of *Indobrachyops* within Rhytidosteidae.[1] The analysis went against Warren and Marsicano's 1998 findings by placing *Indobrachyops* as one of the most [derived](/source/Synapomorphy) rhytidosteids. Marsicano and Sérgio Dias-da-Silva classified the genus within a new subfamily of rhytidosteids, [Derwentiinae](/source/Derwentiinae). Below is a [cladogram](/source/Cladogram) from their study:[1]

Rhytidosteidae Nanolania Trucheosaurus Laidleria Boreopelta Peltostega Pneumatostega Sangaia Mahavisaurus Derwentiinae Deltasaurus Arcadia Rewana Derwentia Indobrachyops

## References

1. ^ [***a***](#cite_ref-DSM11_1-0) [***b***](#cite_ref-DSM11_1-1) [***c***](#cite_ref-DSM11_1-2) Dias-da-Silva, S.; Marsicano, C. (2011). "Phylogenetic reappraisal of Rhytidosteidae (Stereospondyli: Trematosauria), temnospondyl amphibians from the Permian and Triassic". *Journal of Systematic Palaeontology*. **9** (2): 305–325. [doi](/source/Doi_(identifier)):[10.1080/14772019.2010.492664](https://doi.org/10.1080%2F14772019.2010.492664). [hdl](/source/Hdl_(identifier)):[11336/68471](https://hdl.handle.net/11336%2F68471).

- [Paleontology portal](https://en.wikipedia.org/wiki/Portal:Paleontology)

v t e Stereospondyli Kingdom: Animalia Phylum: Chordata Clade: Tetrapodomorpha Order: Temnospondyli Tetrapodomorpha see Tetrapodomorpha Temnospondyli see Temnospondyli Stereospondyli see below↓ Stereospondyli Stereospondyli Arachana Capulomala Peltobatrachus Lapillopsidae Lapillopsis Manubrantlia Rhigerpeton Rotaurisaurus Rhinesuchidae Australerpeton? Broomistega Laccosaurus Parapytanga? Rastosuchus Rhineceps Rhinesuchoides Rhinesuchus Uranocentrodon Lydekkerinidae Chomatobatrachus Cryobatrachus Deltacephalus Eolydekkerina Indobenthosuchus Luzocephalus? Lydekkerina Capitosauria Antarctosuchus Bukobaja Calmasuchus Capitosaurus Cherninia Cyclotosaurus Edingerella Eocyclotosaurus Eryosuchus Heptasaurus Huangfuchuansuchus Jammerbergia Kestrosaurus Kupferzellia Mastodonsaurus Meyerosuchus Odenwaldia Paracyclotosaurus Parotosuchus Quasicyclotosaurus Procyclotosaurus Promastodonsaurus Rhadalognathus Samarabatrachus Sassenisaurus Sclerothorax Selenocara Stanocephalosaurus Stenotosaurus Subcyclotosaurus Tatrasuchus Vladlenosaurus Volgasaurus Volgasuchus Warrenisuchus Watsonisuchus Wellesaurus Wetlugasaurus Xenotosuchus Yuanansuchus Trematosauria see below↓ Trematosauria Trematosauria Almasaurus Bothriceps Callistomordax Chinlestegophis Keratobrachyops Laidleria Latiscopus Qantas Rileymillerus Syrtosuchus Uruyiella Benthosuchidae Benthosuchus Kwatisuchus Trematosauridae Angusaurus Aphaneramma Cosgriffius Erythrobatrachus Gonioglyptus Hyperokynodon Icanosaurus Indolyrocephalus Inflectosaurus Lyrocephaliscus Microposaurus Panchetosaurus Platystega Prothoosuchus Stoschiosaurus Tertrema Tertremoides Thoosuchus Tirraturhinus Trematolestes Trematosuchoides Trematosaurus Trematosuchus Trematotegmen Wantzosaurus Metoposauridae Anaschisma Apachesaurus Arganasaurus Buettnererpeton Dutuitosaurus Metoposaurus Panthasaurus Rhytidosteidae Boreopelta Mahavisaurus Nanolania Peltostega Pneumatostega Rhytidosteus Sangaia Trucheosaurus Derwentiinae Arcadia Acerastia Deltasaurus Derwentia Indobrachyops Rewana Chigutisauridae Arenaerpeton Chigutisaurus Compsocerops Koolasuchus Pelorocephalus Siderops Brachyopidae Banksiops Bathignathus Batrachosaurus Batrachosuchoides Batrachosuchus Blinasaurus Brachyops Gobiops Hadrokkosaurus Notobrachyops Platycepsion Sinobrachyops Vanastega Vigilius Xenobrachyops Plagiosauridae Gerrothorax Megalophthalma Plagiobatrachus Plagiorophus Plagiosaurus Plagioscutum Plagiosternum Plagiosuchus See also: Trematosauroidea Metoposauroidea Rhytidosteoidea Brachyopomorpha Brachyopoidea Plagiosauroidea Category

Taxon identifiers Indobrachyops Wikidata: Q6025631 GBIF: 4815764 IRMNG: 1220692 Open Tree of Life: 4133850 Paleobiology Database: 37120

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Adapted from the Wikipedia article [Indobrachyops](https://en.wikipedia.org/wiki/Indobrachyops) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Indobrachyops?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.