Results 161 to 170 of about 2,621 (208)
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2022
Suborder PINNIPEDIA Illiger, 1811 Referred specimen. NMV P254178, an isolated phalanx collected by B.S.J. Francischelli in 2019 (Figure 2). Diagnosis. An intermediate or proximal phalanx from the manus (from either digits II, III, or IV) of a pinniped, due to the straight medial and lateral surfaces, a distal end narrower than a proximal end, and a ...
Rule, James P., Fitzgerald, Erich M. G.
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Suborder PINNIPEDIA Illiger, 1811 Referred specimen. NMV P254178, an isolated phalanx collected by B.S.J. Francischelli in 2019 (Figure 2). Diagnosis. An intermediate or proximal phalanx from the manus (from either digits II, III, or IV) of a pinniped, due to the straight medial and lateral surfaces, a distal end narrower than a proximal end, and a ...
Rule, James P., Fitzgerald, Erich M. G.
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Nature, 1904 Reproduction in some Pinnipedia.
The Transactions of the Zoological Society of London, 1952Summary. The reproductive organs have been described in a series of seals, including foetal, neonatal and adult specimens. The collection includes seals from the Antarctic, European waters and from the North Pacific. The species are:—Leptonychotes weddelli, Lobodon carcinophagus, Hydrurga leptonyx, Phoca vitulina, Halichoerus grypus, Otaria byronia ...
R. J. Harrison +2 more
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2022On the basis of analysis of shooling materials, observations of free swimming Callorhinus ursinus L. and Pusa caspica Gmel. and experiments carried out with these species of Pinnipedia, with interior or exterior flippers being removed by turns, the role of each pair of extremities was determined in the moment of rectilinear advance molion in water ...
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The Pinnipedia: An Essay in Zoogeography
Geographical Review, 1958S TUDIES that seek to explain the present distribution of animal forms must draw on a wide and varied field of evidence. Some of the evidence, notably that provided by the paleontologists, is direct and generally capable of reliable interpretation; but rarely, except for some groups of land mammals, is the fossil evidence sufficient.
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Comparative Study of the Calcanea of the Pinnipedia
Journal of Mammalogy, 1970Calcanea of seals belonging to 16 genera (21 species) are compared and described. Some indices are valuable in separating members of the Otariidae from the Phocidae. Secondary sexual characters are not involved in differentiation of species. A re-examination of the taxonomic position of Mirounga angustirostris and possibly Arctocephalus pusillus should
H. Randall Robinette, Howard J. Stains
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Are the Pinnipedia Biphyletic?
Systematic Zoology, 1960W HILE more primitive ancestors (creodonts, miacid carnivores) have been suggested in the older literature, respectable anatomical opinion seems to assure us that the Pinnipedia are derived from canoid (sensu Simpson, 1945) carnivores. This paper will support the generally discredited view that the fur seals, sea lions, and walruses, together, have a ...
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Pelage characteristics and systematic relationships in the Pinnipedia
Mammalia, 1978exaly +2 more sources