Ctenosauriscidae

 ( Poposauroidea ) 

Ctenosauriscidae is an extinct family of within the clade Poposauroidea. Ctenosauriscids existed in Africa, Asia, Europe and North America during the Early Triassic to the Middle Triassic period (latest Olenekian to Anisian stages). All species had large "sails" on their backs. Ctenosauriscids are among some of the earliest archosaurs and represent the first global radiation of the group.

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Genera

Arizonasaurus	Valid	Anisian		Moenkopi Formation
Bromsgroveia	Valid	Anisian		Bromsgrove Sandstone Formation
Bystrowisuchus	Valid	Olenekian		Lipovskaya Formation
Ctenosauriscus Valid	Olenekian		Solling Formation	Ctenosauriscus is one of the oldest known to date.
Hypselorhachis	Valid	Anisian		Manda Formation
"Waldhaus" ctenosauriscid	Valid	Anisian	Röt Formation
Xilousuchus	Valid	Olenekian		Heshanggou Formation		Xilousuchus is one of the oldest known to date.

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Phylogeny Ctenosauriscidae was named by Oskar Kuhn in 1964 to include the genus Ctenosauriscus. It is a stem-based taxon defined by Richard J. Butler, Stephen L. Brusatte, Mike Reich, Sterling J. Nesbitt, Rainer R. Schoch and Jahn J. Hornung in 2011 as "the most inclusive clade containing Ctenosauriscus koeneni but not Poposaurus gracilis, Effigia okeeffeae, Postosuchus kirkpatricki, Crocodylus niloticus, Ornithosuchus longidens, or Aetosaurus ferratus". The below follows a 2011 analysis by Butler et al., the first based on Brusatte et al. 2010 and the second based on Nesbitt 2011.

Categories: Poposauroidea, Triassic Reptiles Of Asia, Triassic Reptiles Of Africa, Triassic Reptiles Of Europe, Triassic Reptiles Of North America, Olenekian First Appearances, Middle Triassic Extinctions, Pseudosuchian Families

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