Suchergebnisse
Suchergebnisse:
Vor 3 Tagen · A mammal (from Latin mamma 'breast') [1] is a vertebrate animal of the class Mammalia ( / məˈmeɪli.ə / ). Mammals are characterized by the presence of milk-producing mammary glands for feeding their young, a neocortex region of the brain, fur or hair, and three middle ear bones.
Vor 2 Tagen · Mammals are vertebrates that feed their young with milk and have hair, a hinged lower jaw, and a muscular diaphragm. Learn about the diversity, evolution, and distribution of mammals, from bats and shrews to whales and elephants.
- An animal is considered a mammal if it can produce milk. Other features unique to mammals include hair or fur (chemically different from hairlike s...
- It is estimated that there are more than 5,500 living mammal species. Mammals are incredibly diverse and can be found in every major habitat.
- The biggest living mammal—indeed, the largest animal ever—is the blue whale. It can be as heavy as 180 metric tons (200 short tons) and reach a len...
- According to fossil records, mammals have existed since the Triassic Period, alongside early dinosaurs such as Riojasaurus and Saltopus. True mamma...
- Mammals evolved from a group of reptiles called therapsids, which lived from 299 million to 200 million years ago. Therapsids were quadrupedal and...
- The platypus has many features not found in other mammals. It is part of a group of mammals known as monotremes, which lay eggs and have specialize...
Vor 23 Stunden · Marsupials are a diverse group of mammals belonging to the infraclass Marsupialia. They are primarily found in Australasia , Wallacea , and the Americas . One of the defining features of marsupials is their unique reproductive strategy, where the young are born in a relatively undeveloped state and then nurtured within a pouch.
Vor 3 Tagen · Mammals are metagenomic, in that they are composed of not only their own genes, but also those of all of their associated microbes. Gut microbiota has co-diversified as mammalian species have evolved. Recent studies indicate that adaptive divergence between mammalian species is shaped in part by changes in the gut microbiota.
Vor 4 Tagen · marsupial, any of more than 250 species belonging to the infraclass Metatheria (sometimes called Marsupialia), a mammalian group characterized by premature birth and continued development of the newborn while attached to the nipples on the mother’s lower belly.
- The Editors of Encyclopaedia Britannica
- A marsupial is a mammal that belongs to the infraclass Metatheria, which is sometimes called Marsupialia. There are more than 250 marsupial species...
- There are more than 250 species of marsupials. Examples of marsupials include but are not limited to kangaroos, wallabies, wombats, the koala, the...
- Some 200 species of marsupials are found in Australia, New Guinea, and neighbouring islands. Some 70 species live in the Americas, mainly in South...
- Because marsupials are born in vulnerable embryonic conditions, pouches provide shelter, warmth, and nourishment to the developing young. Pouches c...
23. Apr. 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).
4. Apr. 2024 · New research upends a long-held theory that male mammals tend to be bigger than their female counterparts. Will Sullivan. March 14, 2024
