Prehistoric Bird

There is significant evidence that birds emerged within theropod dinosaurs , specifically, that birds are members of Maniraptora , a group of theropods which includes dromaeosaurs and oviraptorids , among others. [4] As more non-avian theropods that are closely related to birds are discovered, the formerly clear distinction between non-birds and birds becomes less so. This was noted already in the 19th century, with Thomas Huxley writing:


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