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Monotremes lay eggs. Monotremes include just the platypus and the echidna.
However, it is a fallacy to suggest that their ancestors were reptilian. This is pure theory, and not backed up by any evidence. Fossil evidence shows, for example, that the platypus is largely unchanged compared to its ancient, larger ancestor.
What else can I help you with?
Which group of mammals lay eggs like their reptilian ancestors?
Mammals which lay eggs are called monotremes. They include the platypus, short-beaked echidna and long-beaked echidna. However, there is no evidence that reptiles were ancestors of the monotremes. Such a belief remains a theory, not fact.
The difference between reptilian eggs and amphibian eggs in that reptilian eggs?
Amphibian eggs and Fish eggs are usually found with a layer of a jelly like substance coating the egg. Reptile eggs are found with an egg that is protected with a shell.
How are monotremes unusual mammals?
They are the only mammals that lay eggs in order to reproduce.
The difference between reptilian eggs and amphibian eggs is that reptilian eggs?
Reptilian eggs often have a hard or leathery shell protecting them - amphibian eggs do not. Amphibians like frogs and salamanders lay eggs that almost look like balls of gel or slime, so they must be laid somewhere moist. Because reptile eggs have a protective shell, they can be laid in more varied areas than amphibian eggs can.
Which order contains the one kind of mammal that lays eggs?
None - because there are two types of mammals which lay eggs. Monotremata is the order which contains the echidna and the platypus, both of which are egg-laying mammals. Monotremes is the order of mammals that lay eggs rather than giving live birth.
Which order of mammals lays eggs?
Mammals in the order Monotremata lay eggs. There are just three species of animal in this order, and they are the platypus, short-beaked echidna (both of Australia) and the long-beaked echidna (found in New Guinea).
What is the scientific classification given to mammals that lay eggs?
Mammals that lay eggs are called monotremes. They are placed in the infraclass and order Monotremata.
Why prototherians are unfinished mammals?
Prototherians, such as the platypus and echidna, are considered "unfinished" mammals because they exhibit both reptilian and mammalian characteristics. They lay eggs like reptiles, but also produce milk for their young like mammals. These unique features suggest that prototherians represent an ancient stage in mammalian evolution before the development of more distinct mammalian traits.
Are giraffe's eggs hard?
Giraffes are mammals. Mammals do not lay eggs.
Can you name a animal that give us eggs and mammals?
chickens give us eggs and the eggs have mammals inside. Platypus and echidna (monotremes, mammals that lay eggs)
Do mammles give birth or lay eggs?
Egg-laying mammals are known as monotreme. They are of the Order monotremata.Apart from monotremes, other animal groups which lay eggs are birds, reptiles fish and amphibians. Only the birds lay eggs exclusively. Among the reptiles, fish and amphibians, some are live-bearers.
Name a mammal that is born from an egg?
Nothing can be "born" from an egg: it must be hatched. The order of mammals that lays eggs is Monotremata, or the monotremes. Platypus and Echidnas are the only monotremes, or mammals that lay eggs.
