Marsupial mammals: representatives and their characteristics

There are two subclasses of mammals - pervozveri and real animals. The first one is the detachment. One-pass. They differ from the latter in that they lay eggs, but the cubs hatched from them are fed with milk. These animals are divided into two suborder - marsupial and placental mammals.

The first differ from the second in that during pregnancy the female does not form a placenta - a temporary organ that provides a link between the mother and daughter organism. But these animals have a bag, which is designed for carrying the baby, which is born incapable of independent life. In this order there is only one detachment - Marsupials. And to the placental belong all other orders, such as artiodactyls, pinnipeds, predators, primates, bats, etc.

Classification

The marsupial mammals occupy an ambiguous position in the taxonomy of animals . In some systems, this group of organisms is a detachment, and in others it is an infraclass. For example, let's take a koala. According to one of the options, its place in the classification looks like this:

• Domain - Eukaryotes.
• The Kingdom is Animals.
• Type - Chord.
• Subtype - Vertebrates.
• Class - Mammals.
• Squad - Marsupials.
• The family is Wombat.

Alternatively, this is the case:

• Domain - Eukaryotes.
• The Kingdom is Animals.
• Type - Chord.
• Subtype - Vertebrates.
• Class - Mammals.
• Infraclass - Marsupials.
• Detachment - Two-milled marsupial.
• Suborder - Wombat-like.
• Family - Koalas.

Characteristics of marsupial mammals

Most species of this order are endemic, that is, they live only in a specific locality. Most often this is Australia. Almost all the marsupial mammals of the planet live on this continent. Most marsupials are listed in the Red Book.

Also representatives of this group of animals inhabit New Guinea and are found in South and North America. Marsupial mammals are divided into nine families: Opossumovye, Marsupial anteaters, Bandicut, Predatory marsupials, Cenolestes, Possum, Kangaroo, Wombat, Marsupial moles. The most ancient and the most primitive of the families of this order are Opossum, from which all other animals of this group originated. Let's take a closer look at each family and its representatives.

Marsupials outside of Australia

The oldest family is the Possum. Animals belonging to this group are one of the few marsupials that live outside of Australia.

They are distributed in the territory of America. To this family belong such marsupials as smoky, eastern, house, velvet, American opossums. These are small animals, about 10 cm long, with a long tail and thick wool. They lead a predominantly nocturnal lifestyle, feed on insects and a variety of fruits. These animals are good at pretending to be dead in case of danger. Also outside Australia, on the territory of South America, some species of kangaroos, for example, wallabies , live.

Representatives of the Marsupial Squad living in Australia

These include most of the animals in this group. The most famous of them are mammals of the Kangaroo family. To him belong such representatives as a big red kangaroo, a bear kangaroo, a long-eared kangaroo, a western gray kangaroo, etc. It is a large animal with a large tail that serves as an additional support for them. These mammals have underdeveloped forepaws, however strong back, which allows them to move, jumping for long distances. The basic diet of kangaroos consists of plants. The young of these animals are born only three centimeters in length, the gestation period of the female is only about 30 days (up to 40, depending on the species). In addition, this family includes kangaroo rats. Equally common in Australia are wombats. These are small animals, the muzzle of which in some ways resembles a bear, but their teeth are almost the same as those of rodents.

Vembets feed on the roots of various plants, all kinds of fruits and seeds. Their front paws have large claws, which allows them to more effectively dig the ground, because wombats are one of the animals that spend most of their life in burrows under the ground. Similar behavior is characterized and marsupial moles are small animals eating larvae of beetles and seeds. They also differ in that they do not have a constant body temperature.

Marsupials, listed in the Red Book

The most famous of these are koalas. They are on the verge of extinction, as the only product they eat are eucalyptus leaves, and that's not all - of the 800 species of this plant, only 100 are eaten by koalas. Also, the ring-tailed kangaroo, northern long-haired wombat, marsup marten and others are eaten in the Red Book .

The largest and smallest animals of the order Marsupials

The largest mammal of this group is a large gray kangaroo, and the smallest is a posedo-honey who feeds on the pollen of plants. The largest marsupial animal lives in South and Western Australia. Its weight can reach fifty kilograms, and growth - a little more than a meter.

The smallest marsupial mammal - Acrobates pygmaeus - lives only on the territory of Australia. His weight rarely exceeds fifteen grams. This animal has a long tongue, it is needed to make it easier to get pollen and nectar of plants. Also, one of the smallest marsupial animals can be called a marsupial mouse, whose weight is also about ten grams.