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Dolichosaurus Temporal range: Upper Cretaceous |
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| Fossil | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Sauropsida |
| Order: | Squamata |
| Suborder: | Scleroglossa |
| Family: | Dolichosauridae |
| Genus: |
Dolichosaurus Owen, 1850 |
| Species | |
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Dolichosaurus (meaning "long lizard") is an extinct genus of marine squamate of the Upper Cretaceous Cenomanian chalk deposits of England. Sister-group relationships between coniasaurs, dolichosaurs, Aigialosauridae and Mosasauridae are an unresolved polytomy. The paleobiology of Dolichosaurus is reconstructed as similar to coniasaurs, nothosaurs, and modern sea snakes.