Capitosauria

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Capitosauria
Temporal range: Triassic
Mastodonsaurus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: "Amphibia" (wide sense)
Order: Temnospondyli
Clade: Stereospondylomorpha
Suborder: Stereospondyli
Clade: Capitosauria
Schoch and Milner, 2000
Clades

Capitosauria is a clade of stereospondyl temnospondyls. Capitosauria and its sister taxon Trematosauria are the only major temnospondyl clades that existed during the Mesozoic.

Capitosauria was first named by Schoch and Milner (2000) and further described by Yates and Warren (2000), who assigned Lydekkerina and Mastodonsauroidea to it.[1][2] It was described by Damiani (2001) under the name Mastodonsauroidea.[3] In their phylogenetic analysis of temnospondyls, Ruta et al. (2007) placed Lydekkerina and its relatives within the clade Rhytidostea, while placing only mastodonsauroid taxa within Capitosauria.[4]

Phylogeny

Below is a cladogram from Fortuny et al. (2011) showing the phylogenetic relationships of capitosaurs:[5]

Stereospondyli

Lydekkerina huxleyi


Rhinesuchidae

Rhineceps nyasaensis



Uranocentrodon senekalensis




Capitosauria

Wetlugasaurus angustifrons





Odenwaldia heidelbergensis



Vladlenosaurus alexeyevi







Edingerella madagascariensis



Watsonisuchus spp.





Xenotosuchus africanus




Cherninia denwai




Paracyclotosaurus crookshanki





Stanocephalosaurus pronus



Stanocephalosaurus birdi





Procyclotosaurus stantonensis




Eocyclotosaurus spp.



Quasicyclotosaurus campi











Parotosuchus orenburgensis




Calmasuchus acri





Cyclotosaurus robustus



Tatrasuchus wildi





Eryosuchus garjainovi



Mastodonsaurus giganteus









Trematosauria

Benthosuchus sushkini


Trematosauroidea

Thoosuchus yakovlevi




Angusaurus spp.



Trematosaurus brauni







References

  1. Schoch, R. R.; and Milner, A. R. (2000). "Stereospondyli". In P. Wellnhofer (ed.). Handbuch der Paläoherpetologie 3B. Munich: Verlag Dr. Friedrich Pfeil. p. 203. 
  2. Yates, A. M.; and Warren, A. A. (2000). "The phylogeny of the "higher" temnospondyls (Vertebrata: Choanata) and its implications for the monophyly and origins of Stereospondyli". Zoological Journal of the Linnean Society 128: 77–121. doi:10.1111/j.1096-3642.2000.tb00650.x. 
  3. Damiani, R. J. (2001). "A systematic revision and phylogenetic analysis of Triassic mastodonsauroids (Temnospondyli: Stereospondyli)". Zoological Journal of the Linnean Society 133 (4): 379–482. doi:10.1111/j.1096-3642.2001.tb00635.x. 
  4. Ruta, M.; Pisani, D.; Lloyd, G. T.; and Benton, M. J. (2007). "A supertree of Temnospondyli: cladogenetic patterns in the most species-rich group of early tetrapods". Proceedings of the Royal Society B 274 (1629): 3087–3095. doi:10.1098/rspb.2007.1250. PMC 2293949. PMID 17925278. 
  5. Fortuny, J.; Galobart, À.; Santisteban, C. D. (2011). "A New Capitosaur from the Middle Triassic of Spain and the Relationships within the Capitosauria". Acta Palaeontologica Polonica 56 (3): 553. doi:10.4202/app.2010.0025. 

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