Piatnitzkysaurus floresi
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Piatnitzkysaurus Temporal range: Middle Jurassic, 166–164 Ma |
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| Skeleton cast | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Order: | Saurischia |
| Suborder: | Theropoda |
| Family: | †Piatnitzkysauridae |
| Genus: | †Piatnitzkysaurus |
| Type species | |
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Piatnitzkysaurus floresi Bonaparte, 1979 |
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Piatnitzkysaurus (/ˌpiːətnɪtskiːˈsɔːrəs/ PEE-ət-nits-kee-SAW-rəs meaning "Piatnitzky's lizard") is an extinct genus of megalosauroid theropod dinosaur that lived approximately 166 to 164 million years ago during the middle part of the Jurassic Period in what is now Argentina. Piatnitzkysaurus was a moderately large, lightly built, bipedal, ground-dwelling carnivore, that could grow up to 6.6 m (21.7 ft) long.
The type species, Piatnitzkysaurus floresi, was described by Jose Bonaparte in 1979. It was named to honor Alejandro Matveievich Piatnitzky (1879–1959), a Russian-born Argentine geologist.
The holotype specimen of Piatnitzkysaurus, PVL 4073, was collected during expeditions in 1977, 1982, 1983 at the Cañadón Asfalto Formation in sediments that were deposited during the Callovian stage of the Jurassic period, approximately 166 to 164 million years ago. Once thought to be a basal carnosaur, it is instead a megalosauroid.
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