Sinoconodon
Extinct genus of mammaliamorphs / From Wikipedia, the free encyclopedia
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Sinoconodon is an extinct genus of mammaliamorphs that appears in the fossil record of the Lufeng Formation of China in the Sinemurian stage of the Early Jurassic period, about 193 million years ago.[1] While sharing many plesiomorphic traits with other non-mammaliaform cynodonts, it possessed a special, secondarily evolved jaw joint between the dentary and the squamosal bones, which in more derived taxa would replace the primitive tetrapod one between the articular and quadrate bones. The presence of a dentary-squamosal joint is a trait historically used to define mammals.[2][3]
Quick Facts Scientific classification, Binomial name ...
Sinoconodon | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Synapsida |
Clade: | Therapsida |
Clade: | Cynodontia |
Clade: | Mammaliamorpha |
Order: | †Sinoconodontiformes Kinman, 1994 |
Family: | †Sinoconodontidae Mills, 1971 |
Genus: | †Sinoconodon Patterson & Olson, 1961 |
Species: | †S. rigneyi |
Binomial name | |
†Sinoconodon rigneyi | |
Synonyms | |
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