Nannopterygius enthekiodon
- Time
- 149.2–154.8 million years ago
- Period
- Unknown
- Known sites
- 1

Summary
Nannopterygius is an extinct genus of ophthalmosaurid ichthyosaur that lived during the Middle Jurassic to the Early Cretaceous. Fossils are known from England, Kazakhstan, Russia, and Norway and six species are currently assigned to the genus.
Source: Wikipedia - Nannopterygius
Known Sites
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