Piveteausaurus
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Piveteausaurus Temporal range: Middle Jurassic, 164 Ma |
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| Fossil holotype braincase, Musee d'Histoire Naturelle, Paris | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | Saurischia |
| Suborder: | Theropoda |
| Family: | †Megalosauridae |
| Genus: |
†Piveteausaurus Taquet & Welles, 1977 |
| Species: | †P. divesensis |
| Binomial name | |
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Piveteausaurus divesensis (Walker, 1964 [originally Eustreptospondylus]) |
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| Synonyms | |
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Eustreptospondylus divesensis Walker, 1964 |
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Eustreptospondylus divesensis Walker, 1964
Piveteausaurus (meaning "Jean Piveteau's lizard") is a genus of theropod dinosaur known from a partial skull discovered in the Middle Jurassic Marnes de Dives formation of Calvados, in northern France.
The partial braincase that became the type specimen of Piveteausaurus was first described in 1923 by French paleontologist Jean Piveteau in illustrations and photographs of the specimen (MNHN 1920-7). The braincase is comparable in size to that of a large Allosaurus, and resembles that of another megalosauroid, Piatnitzkysaurus from Argentina. Piveteau grouped this partial skull with other specimens found earlier in that locality and described in 1808 by French naturalist Georges Cuvier. In 1861 English paleontologist Richard Owen assigned the fragments to the species Streptospondylus cuvieri, and Piveteau included the skull he found in the same species.
MNHN 1920-7 was found by local collector Dutacq in rocks thought to be Oxfordian (Upper Jurassic), of the Vaches Noires cliffs near Dives in Normandy, France, and was after being reported by amateur geologist Cazenave in 1920 acquired by Professor Marcellin Boule for the Muséum national d'histoire naturelle. Later these rocks were reevaluated as older (Upper Callovian, Middle Jurassic, ~164 million years old).
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