Gerrothorax ("wicker chest") is an extinct genus of temnospondyl amphibian from the Triassic period of Greenland, Germany, Poland, Sweden, and possibly Thailand.

It probably hid under sand or mud on river and lake bottoms, and in brackish waters,[1] scanning for prey with its large, upward-facing eyes.

When originally described in 1946, these bones were considered to correspond to feather-like external gills similar to those of modern-day neotenic salamanders, such as the mudpuppy, the axolotl, and the olm.

[4] A 2008 study showed that Gerrothorax lifted its head rather than dropping its jaw when catching prey, which has been compared to how a toilet seat opens.

Throughout this time span, specimens of the species show few morphologic differences, making G. pulcherrimus an extreme example of evolutionary stasis.