WebbPinnipeds are typically sleek-bodied and rather large. Their bodies are well adapted to their aquatic habitat, in which they spend most of their lives. In place of hands, their forelimbs are large flippers (hence the name "fin-feet"), and their bodies narrow out into a tail. WebbConsiderable long-standing controversy and confusion surround the phylogenetic affinities of pinnipeds, the largely marine group of “fin-footed” members of the placental mammalian order Carnivora. Until most recently, the two major competing hypotheses were that the pinnipeds have a single (monophyletic) origin from a bear-like ancestor, or that they have …
The Origin and Evolutionary Biology of Pinnipeds: Seals
Webb23 apr. 2009 · The earliest well-represented fossil pinniped is Enaliarctos, a marine form with flippers, which had appeared on the northwestern shores of North America by the … Webb1 jan. 2024 · Pinnipeds—fur seals and sea lions, walruses, and seals—are one of three major clades of extant marine mammals, having a fossil record going back at least to … croce deli cherry hill
clade Etymology, origin and meaning of clade by etymonline
WebbA nearly complete skull and limited postcrania (SDSNH 146624), from the upper Oligocene of the Pysht Formation (Clallam County, Washington State, U.S.A.), represent a new … WebbIs a penguin a pinniped? All pinnipeds also have sensitive whiskers that help them detect prey. Diet is strictly carnivorous, but pinnipeds eat a variety of prey ranging in size from krill, which is filtered from the water by the complex cheek teeth, to, in the case of the leopard seal (Hydrurga leptonyx), penguins and even other pinnipeds. Webb31 dec. 2004 · Twenty genera of primitive arctoids occupying basal positions of nearly all major clades are selected for the analysis. The resulting tree, based on 39 characters, approximates the initial divergence of the arctoids. The traditionally dichotomous Arctoidea, formed by sister clades Ursida and Mustelida, is recovered in our analysis. croce del perdono di san pio x