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A proto-mammal called the synapsid.

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Which type of critter did birds and mammals evolve from?

Birds and mammals both evolved from reptiles.


Did Placental mammals evolve from Marsupials OR from Reptiles?

Marsupials, because Reptiles have never been mammals and have always had their offspring in eggs outside of them.


How do vertebrates evolve?

fish- amphibians- reptiles- birds -mammals


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No. Mammals evolved from synapsid reptiles, a group not closely related to dinosaurs. Dinosaurs are more closely related to modern reptiles and birds than they are to mammals.


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No. Mammals evolved from a group of reptiles called cynodonts. "Raptor" is an informal term for a group of dinosaurs call dromaeosaurids, which were closely related to the ancestors of birds.


Are alligator's mammals?

No, alligators are not mammals, they are reptiles.


Are turtles mammals or reptiles?

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Snakes are reptiles. Both mammals and reptiles are animals.


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Mammals are warm blooded and reptiles are cold blooded.


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