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Pinniped Life History

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Encyclopedia of Animal Cognition and Behavior
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The term pinniped comes from the Latin pinna for “fin” or “feather,” and pedis for “footed.” The taxonomic grouping Pinnipedia is not its own order, but rather is classified within the order Carnivora and consists of three families of marine mammals: Phocidae which are the true seals (i.e., earless seals), Otariidae, the sea lions and fur seals (i.e., eared seals), and Odobenidae, the walrus. Otariids are most easily distinguished by their external ear or pinnae, their large fore-flippers, and the ability to rotate their pelvis on land and walk quadrupedally. Phocids are distinguished by a lack of pinnae, their short, fur covered fore-flippers which have pronounced claws, and their inability to rotate their pelvis to walk quadrupedally on land. Odobenids are easily recognized by their general lack of fur and their pronounced tusks present on both the male and female walrus. Like the Otariids, they can walk quadrupedally on land (see Fig. 1). Taken together there are 33 extant species...

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Biolsi, K.L. (2017). Pinniped Life History. In: Vonk, J., Shackelford, T. (eds) Encyclopedia of Animal Cognition and Behavior. Springer, Cham. https://doi.org/10.1007/978-3-319-47829-6_942-1

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