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The largest living procyonid is the raccoon ( Procyon lotor) of North America, having a body length of 40 to 70 cm (16 to 28 in) and a body weight of 3.5 to 9 kg (8 to 20 lb). The extinct Chapalmalania of South America was the largest known member of this family, about 1.5 metres (4.9 ft) in body length.
Ursus (mammal) Ursus. (mammal) Ursus is a genus in the family Ursidae ( bears) that includes the widely distributed brown bear, [3] the polar bear, [4] the American black bear, and the Asian black bear. The name is derived from the Latin ursus, meaning bear. [5] [6]
Mammalia. Los mamíferos ( Mammalia) son una clase de animales vertebrados amniotas homeotermos (de sangre caliente) que poseen glándulas mamarias productoras de leche con las que alimentan a las crías. La gran mayoría de este grupo son vivíparos (con la excepción de los monotremas: ornitorrinco y equidnas ).
Mammals became the dominant land animals after non-bird dinosaurs were eliminated. Recent work helped to explain their success: epigenetics seems to have started in early mammals. Mammals are in the class Mammalia. They are a group of vertebrate animals. They have fur or hair and very precise temperature regulation.
Definition of "mammal" Figure 1:In mammals, the quadrate and articular bones are small and part of the middle ear; the lower jaw consists only of dentary bone.. While living mammal species can be identified by the presence of milk-producing mammary glands in the females, other features are required when classifying fossils, because mammary glands and other soft-tissue features are not visible ...
Mammal. Mammals are the class of vertebrate animals characterized by the presence of hair (or fur) and mammary glands, which in females produce milk for the nourishment of young. The other extant (living) classes of vertebrates (animals with backbones) include fish (with a few recognized classes), amphibians, reptiles, and birds .
哺乳類 （ほにゅうるい、 英語: mammal, [ ˈmæm ( ə) l] 、 学名： Mammalia ）は、 哺乳形類 に属する 脊椎動物 の一群である。. 分類階級 は普通 綱 に置かれ、 哺乳綱 （ほにゅうこう）とされる。. ほ乳類 と表記されることもある [1] [2] 。. 基本的に 有性生殖 を ...
