Mammal - Classification, Class Mammalia, Monotremes, …
5 days ago · Mammal - Classification, Class Mammalia, Monotremes, Marsupials & Placental Mammals: This classification of living mammalian taxa includes the subclass Prototheria (monotremes) and the subclass Theria (live-bearing mammals), which is comprised of infraclasses Metatheria (marsupials) and Eutheria (placental mammals).
Mammal | Definition, Characteristics, Classification, Examples,
5 days ago · mammal, (class Mammalia), any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother. In addition to these characteristic milk glands, mammals are distinguished by several other unique features.
Mammal - Evolution, Classification, Adaptations | Britannica
5 days ago · Mammal - Evolution, Classification, Adaptations: Mammals were derived during the Triassic Period from therapsids. Many of the attributes that evolved are correlated with their highly active habits—for example, efficient circulation with a four-chambered heart, hair for insulation, endothermy (warm-bloodedness), and improved mechanics in ...
Taxonomy | Definition, Examples, Levels, & Classification | Britannica
Nov 18, 2024 · taxonomy, in a broad sense the science of classification, but more strictly the classification of living and extinct organisms—i.e., biological classification. The term is derived from the Greek taxis (“arrangement”) and nomos (“law”).
Animal - Classification, Taxonomy, Phylogeny | Britannica
Oct 21, 2024 · Animal - Classification, Taxonomy, Phylogeny: Because the aschelminths have not been studied adequately by modern methods, there is no consensus on their classification. The classification in this article is based on morphological work carried out in the late 1980s and remains to be tested by RNA sequence studies and other comparisons.
Primate | Definition, Species, Characteristics, Classification ...
Oct 4, 2024 · Primate, in zoology, any mammal of the group that includes the lemurs, lorises, tarsiers, monkeys, apes, and humans. The order Primates, including more than 500 species, is the third most diverse order of mammals, after rodents (Rodentia) and bats (Chiroptera).
Dolphin | Facts & Pictures | Britannica
Oct 31, 2024 · Mammalian dolphins are any of the toothed whales belonging to the mammal family Delphinidae (oceanic dolphins) or the mammal families Platanistidae and Iniidae (river dolphins). The name dolphin is also applied to members of the fish genus Coryphaena (family Coryphaenidae), also known as mahimahi.
Bat | Description, Habitat, Diet, Classification, & Facts | Britannica
5 days ago · Bat, any member of the only group of mammals capable of flight. This ability, coupled with the ability to navigate at night by using a system of acoustic orientation (echolocation), has made the bats a highly diverse and populous order.
Vertebrate | Definition, Characteristics, Examples, Classification ...
Nov 18, 2024 · Vertebrate, any animal of the subphylum Vertebrata. They have backbones and are also characterized by a muscular system consisting primarily of bilaterally paired masses and a central nervous system partly enclosed within the backbone.
mammal - Kids | Britannica Kids | Homework Help
Mammals include a wide variety of animals, from cats to humans to whales. There are more than 5,000 species, or kinds, of living mammal. More than half of all mammals are rodents , a group that includes mice and squirrels.