Adamanasuchus

{{Short description|Extinct genus of reptiles}} {{Automatic taxobox | fossil_range = [[Late Triassic]], {{fossil_range|222|216.5}}{{Period fossil range|Triassic|222|216.5}} | image = Adamanasuchus composite reconstruction.jpg | image_caption = A reconstruction of Adamanasuchus created by superimposing described fossils over [[Desmatosuchus]] which is a close relative | taxon = Adamanasuchus | authority = Lucas, Hunt & Spielmann, [[2007 in paleontology|2007]] | type_species = {{extinct}}'''''Adamanasuchus eisenhardtae''''' | type_species_authority = Lucas, Hunt & Spielmann, 2007 }}

'''''Adamanasuchus''''' is an [[extinct]] [[genus]] of [[aetosaur]] that lived during the [[Late Triassic]] period around 222-216.5 million years ago. [[Fossil]]s have been found from several localities from the [[Chinle Group]] in [[Arizona]]<ref name=":1">[https://www.researchgate.net/publication/237329977_LATE_TRIASSIC_AETOSAUR_BIOCHRONOLOGY_REVISITED Heckert, A. B., Lucas, S. G., Hunt, A. P., and Spielmann, J. A. (2007). Late Triassic aetosaur biochronology revised.] ''In:'' Lucas, S.G. and Spielmann, J.A., eds., ''The Global Triassic''. New Mexico Museum of Natural History and Science Bulletin 41.</ref> and date back to the late [[Carnian]] stage of the [[Late Triassic]].<ref name=":0">[https://www.researchgate.net/publication/281820635_A_new_aetosaur_from_the_Upper_Triassic_Adamanian_Carnian_of_Arizona Lucas, S. G., Hunt, A. P., and Spielmann, J. A. (2007). A new aetosaur from the Upper Triassic (Adamanian: Carnian) of Arizona.] ''In:'' Lucas, S. G. and Spielmann, J. A., eds., ''Triassic of the American West''. New Mexico Museum of Natural History & Science, Bulletin 40 p. 241-247</ref> The locality from which it was named after also lends its name to the [[Adamanian]] LVF ([[land vertebrate faunachron]]).

== Description == It was a relatively large genus of aetosaur with unique armor plating. The dorsal armor of Adamanasuchus are distinctive and represent a mosaic of features only found on few aetosaur genera showing that the evolution of aetosaur armor was complex.<ref name=":0" />

This genus is known from partial fossil material of the dorsal armor, caudal vertebrae and a femur. It can be distinguished from other aetosaur genera by several characteristics. The paramedian osteoderms are narrow (~200-225 mm) and arched at a ~30º angle with sparse pitting and faint ridges that are distributed in a limited radial pattern, raised anterior bars, ventral keels, and a ridge or eminence that meets with the posterior edge of the osteoderm, and lateral osteoderms with low, pyramidal spikes that are sparsely distributed pits, faint ridges and relatively shallow arching.<ref name=":0" />

== Paleobiology == Adamanasuchus lived in what is now [[Arizona]] during the [[Late Triassic]] period in the [[Chinle Formation]]. It lived at the same time of many different genera of aetosaurs such as [[Longosuchus]], [[Coahomasuchus]], [[Stagonolepis]], [[Desmatosuchus]], [[Tecovasuchus]], [[Paratypothorax]], [[Typothorax]], [[Rioarribasuchus]], [[Aetosaurus]], and [[Redondasuchus]].<ref name=":1" />

==References== {{Reflist}}

[[Category:Fossil taxa described in 2007]] [[Category:Aetosaurs of North America]] [[Category:Prehistoric pseudosuchian genera]]