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All animals which have a spine, or backbone, are classified in the phylum Chordata. There are three subphylums in Chordata: Urochordata (tunicates), Cephalachordata (lancelets), and Vertebrata (vertebrates). The platypus is a vertebrate. This phylum also includes all animals which have a hollow nerve cord and a notochord at some stage during their development. In the case of vertebrates, the notochord is present in the embryo, and develops into the vertebral body.

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10y ago
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14y ago

It can't. The platypus is a mammal. It is a monotreme, but that is a sub-classification within mammals.

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8y ago

The platypus has a body covered by hair, it is warm-blooded, it has a four-chambered heart, it suckles its young - all characteristics of mammals.

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Q: Why is the platypus in the mammal group?
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What is the mammal group of the platypus?

The mammal group to which the platypus belong is monotremata.There are only two animals in that group: the platypus and the echidna, and they are known as monotremes.


What type of vertebrate group is the platypus in?

The platypus is in the mammal classification. It is a monotreme, or egg-laying mammal.


What vertebrate group does platypus belong to?

The platypus is a mammal, specifically a monotreme.


What group is a platypus in?

The platypus is classified as a mammal. It has all the defining characteristics of a mammal, including the ability to nurture its young on mothers' milk. It is a monotreme, of the order monotremata, meaning it is an egg-laying mammal.


What is another name for the mammal group egg layers?

The mammal group of egg layers are known as monotremes. The platypus and the echidna are both monotremes.


What type of mammal is a platypus?

A platypus is a monotreme, which is an egg-laying mammal.


What are the two groups a platypus is found in?

The platypus is a mammal. It is a member of the group known as monotremes, which consists of egg-laying mammals. It is not a member of any other group.


Is a platypus a monotreme marsupial or placental mammal?

The platypus is a monotreme mammal.


How does it help a platypus being a mammal and reptile?

The platypus is not a reptile - it is an egg-laying mammal.


Is a platypus a bird or a fish?

The platypus is a mammal. Although it lays eggs in a burrow, and hunts for food in the water, it is a warm-blooded mammal that breathes using lungs, not gills. It also feeds its young on mothers' milk, something which no fish does.


Is a paladypus a mammal?

Yes, the platypus is a mammal.


Is a platypus a rodent?

No. A platypus is not a placental mammal of any type, but a monotreme, which is an egg-laying mammal.