Colymbosaurus fossil map
Where fossils of Colymbosaurus 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 | Plesiosaurs & kin |
|---|---|
| Lived | 168.2–113.2 million years ago (Bathonian to Aptian) |
| Periods | Jurassic, Cretaceous |
| Family | Cryptoclididae |
| Named by | Seeley 1874 |
| Fossil records | 18 occurrences at 16 locations (PBDB) |
| Found in | United Kingdom, Norway, France, Russia |
| Rock formations | Kimmeridge Clay, Portland Stone, Agardhfjellet, Faringdon Sand, Mont-Lambert, Oxford Clay |
About Colymbosaurus
Colymbosaurus is a genus of cryptoclidid plesiosaur from the Middle-Late Jurassic (Callovian-Tithonian) of the UK and Svalbard, Norway. There are two currently recognized species, C. megadeirus and C. svalbardensis.
Text in “About” is quoted from the Wikipedia article Colymbosaurus (revision 1324427256), 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: Q5150354.
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