Warrenisuchus
Warrenisuchus is an extinct genus of temnospondyl amphibian from the Early Triassic of Queensland, Australia. It belongs to a diverse group of Triassic temnospondyls called Capitosauria. The type species Warrenisuchus aliciae was erected in 2009. "W. aliciae" was originally described as a species of "Parotosuchus" in 1988, which is known from other species that have been found in Europe, Africa, and Antarctica. In 2000 it was then assigned to a new genus called "Rewanobatrachus" along with the newly named species "R. gunganj", which was declared the type species of the genus. However, "R. gunganj" was later reclassified as a  species of "Watsonisuchus", invalidating the name "Rewanobatrachus" and requiring that "R. aliciae" be placed in its own genus, which was named "Warrenisuchus". However, several studies suggest that "Warrenisuchus aliciae" may be a species of "Watsonisuchus" as well. Unlike most capitosaurs, "Warrenisuchus" is known from many juvenile skulls less than in length. Description. "Warrenisuchus" is known from several fossil specimens. The holotype skeleton preserves most of the skull and lower jaws, the pectoral girdle, the forward-most vertebrae and ribs, and the right hind limb and the paratype specimen includes a partial skull and pectoral girdle. All known specimens of "Warrenisuchus  are very small; the largest skull is only long and the smallest is long (adult capitosaurs can have skulls over a meter in length). They show many characteristics of juvenile individuals such as large eye sockets, rounded heads (adult capitosaurs typically have triangular heads), loose joints between skull bones, small tabular horns, and pineal foramina close to the back of the eye sockets (as opposed to farther back on the skull table). The smallest specimens seem to represent the stage of development immediately after metamorphosis when gills have been lost and the skull bones have thickened but the vertebrae remain 	Warrenisuchus
5266321	poorly developed. Classification. Phylogeny. Below is a cladogram from Maganuco et al." (2009): Paleoenvironment. "Warrenisuchus" fossils are the most common components of an amphibian fauna that existed in eastern Australia during the Early Triassic. They are preserved in the Arcadia Formation, which dates back to the Induan stage. Other temnospondyl amphibians from the Arcadia Formation include rhytidosteids and brachyopoids. Another amphibian fauna existed around the same time in western Australia and includes a greater diversity of brachyopoids along with rhytidosteids, trematosaurids, and the capitosaur "Edingerella", which was a close relative of "Warrenisuchus".