Sisteronia fossil map
Where fossils of Sisteronia have been found, shown on the Earth as it looked about 100 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 100 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 | 113.2–93.9 million years ago (Albian to Cenomanian) |
| Periods | Cretaceous |
| Family | Ophthalmosauridae |
| Named by | Fischer et al. 2014 |
| Fossil records | 6 occurrences at 6 locations (PBDB) |
| Found in | United Kingdom, France, Russia |
| Rock formations | Marnes bleues, txn:170908, West Melbury Marly Chalk, Gault |
About Sisteronia
Sisteronia is an extinct genus of platypterygiine ophthalmosaurid ichthyosaur known from the 'middle' Cretaceous of southeastern England and southeastern France. It contains a single species, Sisteronia seeleyi.
Text in “About” is quoted from the Wikipedia article Sisteronia (revision 1314820795), 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: Q15636066.