Undorosaurus fossil map
Where fossils of Undorosaurus have been found, shown on the Earth as it looked about 145 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 145 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 | Ichthyosaurs |
|---|---|
| Lived | 161.5–143.1 million years ago (Oxfordian to Tithonian) |
| Periods | Jurassic |
| Family | Ophthalmosauridae |
| Named by | Efimov 1999 |
| Fossil records | 6 occurrences at 4 locations (PBDB) |
| Found in | Russia |
| Rock formations | txn:170908 |
About Undorosaurus
Undorosaurus is an extinct genus of ophthalmosaurid ichthyosaur known from western Russia, Svalbard, and Poland. It was a large ichthyosaur, with the type species measuring 4–6 metres (13–20 ft) long.
Text in “About” is quoted from the Wikipedia article Undorosaurus (revision 1318443955), 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: Q7884034.
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