Kryostega fossil map
Where fossils of Kryostega have been found, shown on the Earth as it looked about 252 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 252 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Early tetrapods & amphibians |
|---|---|
| Lived | 247–241.464 million years ago |
| Periods | Triassic |
| Named by | Sidor et al. 2008 |
| Fossil records | 1 occurrences at 1 locations (PBDB) |
| Found in | Antarctica |
| Rock formations | Fremouw |
About Kryostega
Kryostega is a large temnospondyl amphibian from the Early or Middle Triassic of Antarctica. The genus is based on a single specimen collected in 1986 by a team led by paleontologist William H. Hammer of Augustana College, and now housed in the collections of the American Museum of Natural History (AMNH 24419).
Text in “About” is quoted from the Wikipedia article Kryostega (revision 1344547834), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q18609852.