Anaschisma is an extinct genus of large temnospondyl amphibians. These animals were part of the family called Metoposauridae, which filled the crocodile-like predatory niches in the late Triassic. It had large skull about long, and possibly reached long. It was an ambush hunter, snapping up anything small enough to fit in its huge jaws. It was very common during the Late Triassic (Norian age) in what is now the American Southwest. History of discovery Anaschisma was erected by Branson (1905) for two metoposaurid skulls from the Popo Agie Formation of Wyoming. The type species, A. browni, was coined for the skull UC 447, while a second nominal species, A. brachygnatha, was erected for the skull UC 448. Moodie (1908) considered A. brachygnatha a junior synonym of A. browni, although Branson and Mehl (1929) retained the two species as distinct. Colbert and Imbrie (1956) synonymized Anaschisma with the Newark Supergroup genus Eupelor but retained it as a valid Eupelor species endemic to the Popo Aggie Formation. Chowdhury (1965) synonymized Anaschisma with Metoposaurus and sunk all North American metoposaurids from the Chinle and Dockum into browni. Hunt (1989) recovered Anaschisma as an advanced or highly derived form. Some specimens attributed to Anaschisma from the Redonda Formation were renamed Apachesaurus by Hunt (1993). Koskinonodon The genus Koskinonodon was formerly named Buettneria by Case in 1922, but in 2007, B.D. Mueller realized that the name Buettneria had already been given to a bush cricket from the Republic of Congo by Karsch (1889), so he made the genus Koskinonodon the earliest available unpreoccupied name for the temnospondyl. Lucas et al. (2007), however, petitioned the ICZN to suppress Karsch's name in favor of Case's name, citing evidence that the amphibian name is much more well known and widely used (the authors cited 75 uses of the name in scientific literature and books over the last 85 years), and that the bush cricket name had been seldom used in technical literature. However, ICZN Opinion 2255 issued in 2010 rejected the petition. Known Koskinonodon fossils have been found in the United States, especially the Chinle Formation of Petrified Forest National Park and the Placerias Quarry in Arizona, the Garita Creek Formation of central New Mexico (the quarry at Lamy), the Petrified Forest Member of northern New Mexico, the Bluewater Creek Formation of western New Mexico, the New Oxford Formation of Pennsylvania, the Tecovas Formation of western Texas, and