Scalenodon
Scalenodon Temporal range: Middle Triassic
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Synapsida |
Clade: | Therapsida
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Clade: | Cynodontia
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Family: | †Traversodontidae |
Genus: | †Scalenodon Crompton, 1955 |
Species | |
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Scalenodon is an extinct
S. angustifrons was named in 1946 and several other species were named in the following years. Most of the species from Africa are now thought to belong to different genera than Scalenodon.History and species
The first fossils belonging to Scalenodon were found in the
A 2003 analysis of traversodontid relationships did not find the species of Scalenodon from the Manda Formation to form a single clade, meaning that many were not referable to the genus. The study suggested that S. hirschoni had more in common with other traversodontids like Luangwa. S. attridgei was viewed as a possible synonym of S. charigi, which was also found to be only distantly related to S. angustifrons.[5] S. hirschsoni was placed in its own genus, Mandagomphodon, in 2013.[6]
S. angustifrons and S. boreus remain valid species of Scalenodon. While S. angustifrons is known from partial skulls, teeth, and a lower jaw, S. boreus is known only from two upper postcanine teeth.
References
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- ^ Brink, A.S. (1963). "Two cynodonts from the Ntawere Formation in the Luangwa valley of Northern Rhodesia". Palaeontologia Africana. 8: 77–96.
- ^ Tatarinov, L.P. (1973). "Cynodonts of Gondwanan habit in the Middle Triassic of the USSR". Paleontological Journal. 2: 200–205.
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- ISBN 978-94-007-6840-6.