Excalibosaurus
Excalibosaurus (meaning "Excalibur's lizard") is a monotypic genus of marine prehistoric reptiles (ichthyosaurs) that lived during the Sinemurian stage (approximately 196.5 ± 2 Ma to 190.8 ± 1.0 Ma (million years ago)) of the Early Jurassic period in what is now England. It is characterized by the extreme elongation of the rostrum, with the lower jaw about three-quarters the length of the upper jaw, giving the animal a swordfish-like look. The only known species is Excalibosaurus costini.
| Excalibosaurus Temporal range: Early Jurassic, | |
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| Fossil, Royal Ontario Museum | |
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| Genus: | Excalibosaurus McGowan, 1986 |
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| Excalibosaurus costini McGowan, 1986 | |
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