Allodesmus
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Skeleton of A. gracilis at the Natural History Museum of Los Angeles County | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Carnivora |
Clade: | Pinnipedia |
Family: | †Desmatophocidae |
Genus: | †Allodesmus Kellogg, 1922 |
Species | |
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Allodesmus is an extinct genusofpinniped from the middle to late MioceneofCalifornia and Japan that belongs to the extinct pinniped family Desmatophocidae.
Allodesmus measured about 8 feet (2.4 m) long and weighed 800 pounds (360 kg). Allodesmus had the specific anatomical features found in modern polygynous pinnipeds: sexual dimorphism, strong canines for fights between bulls and teeth with well-defined growth zones, a result from periodic fasting (in order to defend their harem, males would not take to the sea to feed during the breeding season).[1]
Allodesmus sinanoensis and A. packardi were previously assigned separate genera, Megagomphos and Brachyallodesmus, respectively, but many authors questioned this generic distinction, and the cladistic analysis by Boessenecker and Churchill (2018) found no support for this generic scheme. Atopotarus, referred to Allodesmus by some authors (e.g. Mitchell 1966), is distinct from Allodesmus by the absence of a prenarial shelf and M2, double-rooted cheek teeth, a small, triangular postorbital process, and a mastoid process projecting ventral to the postglenoid process.[2][3]
Genera of pinnipeds and their stem-allies
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Allodesmus |
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