| Named By: | E. B. Branson and M. G. Mehl in 1929 (Originally named as Buettneria by case in 1922) |
| Time Period: | Late Triassic, 228-208 Ma |
| Location: | USA, including Arizona - Chinle Formation, New Mexico - Garita Creek Formation, Petrified Forest Formation and Bluewater Creek Formation, Pennsylvania - New Oxford Formation, Texas - Tecovas Formation, and Wyoming - Popo Agie Formation, Chugwater Group. Also known from India - Maleri Formation |
| Size: | About 3 meters long. Skull about 65 centimeters long |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Multiple individuals, the genus is one of the most common found |
| Classification: | | Chordata | Amphibia | Temnospondyli | Stereospondyli | Metoposauridae | |
| Also known as: | | Buettneria perfecta | Metoposaurus bakeri | Metoposaurus maleriensis | |
Koskinonodon 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 may have reached up to 3 m (10 ft) in length, with a 65-cm-long skull. It was an ambush hunter, snapping up anything small enough to fit in its huge jaws. It was very common during the Late Triassic (Carnian age) in what is now the American Southwest.