The earless seals, phocids, or true seals are one of the three main groups of mammals within the seal lineage, Pinnipedia. All true seals are members of the family Phocidae (/ ˈfoʊsɪdiː /). They …

Pho­cids have a short, stubby tail, and males have a well-de­vel­oped bac­u­lum. Young of many pho­cids are cov­ered with dense, soft, often white coats. In adults, the fur is often stiff and …

Phocids are characterized by the absence of external ear pinnae, a short muzzle, beaded vibrissae, dark skin, short fur, generally two teats in females, internal testes, furred …

海豹科（学名：Phocidae）为哺乳纲食肉目下的一科，全球共有14属19种12亚种； [25] 中国共有3属3种，分别为髯海豹、斑海豹及环海豹。 [26] 海豹科动物适应水生环境，身体流线型，无 …

2018年1月1日 · Phocids are found throughout all of the world’s major oceans except for the Indian Ocean. Twelve species breed on ice, five species breed on land. Uniquely, the gray seal …

There are 18 species of phocid seals, the smallest species (ringed seal) is more than 20 times smaller than the largest (southern elephant seal), with marked sexual dimorphism present in …

The earliest phocid seals evolved 30–24 million years ago (Ma) in the western North Atlantic. There remains uncertainty in evolutionary relationships, with molecular data positioning …

Phocids. Phocids lack external pinnae and are unable to rotate their pelvic appendages (hind flippers) underneath their trunk and therefore are unable to “walk” on land. The pelvic …

The earless seals, phocids or true seals are one of the three main groups of mammals within the seal lineage, Pinnipedia. All true seals are members of the family Phocidae . They are …

Earless seal is the common name for any of the pinnipeds comprising the family Phocidae, characterized by the absence of a pinna (external part of ear, although there is a functional …