Cetiosauriscus
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Cetiosauriscus Temporal range: Middle Jurassic, 165–161 Ma |
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| Composite photo of the holotype | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Order: | Saurischia |
| Suborder: | †Sauropodomorpha |
| Clade: | †Eusauropoda |
| Genus: |
†Cetiosauriscus von Huene, 1927 |
| Species: | †C. stewarti |
| Binomial name | |
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Cetiosauriscus stewarti Charig, 1980 |
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Cetiosauriscus (/siːθiːuːsɒrɪskʌs/ meaning "whale lizard like" i.e. "Cetiosaurus-like") is an extinct genus of sauropod dinosaur. It lived in the Callovian (Middle to Late Jurassic Period) of England (about 165 to 161 million years ago [mya]). Cetiosauriscus was a quadrupedal, herbivorous, saurischian, and was possibly the earliest diplodocid. It was named by Friedrich von Huene in 1927, for the species Cetiosaurus leedsi. Before 1993 it was shown that C. leedsi was not a Cetiosauriscus species, so that year Alan J. Charig sent a petition to the ICZN to designate C. stewarti as the type species. The remains include a series of vertebra, a hind leg, a partial sacrum, and a front leg. A potential additional specimen includes a diplodocid whiplash tail. Cetiosauriscus has, over time, been classified in Cetiosauridae, Diplodocidae, and Mamenchisauridae. It lived alongside Sarcolestes, Callovosaurus, and Lexovisaurus.
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