Based on a poorly preserved partial skull, Phthinosuchus is a poorly known basal therapsid from the Middle Permian of Russia.
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Name
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Phthinosuchus discors
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Authority
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Efremov, 1954
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Meaning of the generic name
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Declining crocodile
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Size
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Skull length: 20 cm, Length: ?1.5 m
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Remains
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Holotype (PIN 1954/3): partial skull and associated lower jaw.
Referred materials: PIN 296/1 (partial skull, holotype of Dinosaurus murchisoni)
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Age and Distribution
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Horizon: Middle Permian, Early Tatarian (~early Capitanian).
Type locality: Copper Sandstones, Demsky Mines, Bashkiry, Western Cisuraly, Bashkortostan Rep., Russia .
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Classification
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Synapsida Therapsida Biarmosuchia Phthinosuchidae
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Further Reading
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Efremov, I. A. 1954. The fauna of terrestrial vertebrates in the Permian copper sandstones of western Cis-Urals: Transactions de Paleontologisches Institute l’Academie de l’Union des Republiques Sovietiques Socialistes, v. 54, 416 pp.
| | | Synonyms | | Rhopalodon murchisoni Pand, 1898; Dinosaurus murchisoni Fischer, 1847; Rhopalodon fischeri Watson, 1921
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|  Life reconstruction of Phthinosuchus discors (© D. Bogdanov)  Line drawing of the holotype skull of P. discors. After Efremov, 1954. |
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