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Deutsche Vierfüßer {m} Synonyme

Englische tetrapod Synonyme

tetrapod Definition

Tetrapod
(n.) An insect characterized by having but four perfect legs, as certain of the butterflies.

tetrapod Bedeutung

tetrapod a vertebrate animal having four feet or legs or leglike appendages
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The superclass Tetrapoda , or the tetrapods ?t?tr?p?d, comprises the first four-limbed vertebrates and their descendants, including the living and extinct amphibians, birds, mammals, reptiles and some ancient, exclusively aquatic creatures such as the Acanthostega. Tetrapods evolved from the lobe-finned fishes around 390 million years ago in the middle Devonian Period, with modern tetrapod groups having appeared by the late Devonian, 367.5 million years ago. The specific aquatic ancestors of the tetrapods, and the process by which land colonization occurred, remain unclear, and are areas of active research and debate among palaeontologists at present.

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