Batrachomorpha

Common card · No. 477534

The Batrachomorpha ("frog forms") are a clade containing extant and extinct amphibians that are more closely related to modern amphibians than they are to mammals and reptiles. According to many analyses they include the extinct Temnospondyli; some show that they include the Lepospondyli instead. The name traditionally indicated a more limited group. The first tetrapods were all amphibians in the physiological sense that they laid their eggs in water, and are colloquially sometimes referred to as labyrinthodonts or stegocephalians. The term "amphibians" can be ambiguous, however. In modern phylogeny, the most basal tetrapods are discerned from two derived branches, one consisting of the crown group of modern amphibians, the Lissamphibia, and its relatives. In this scheme, the name Batrachomorpha is given to this branch of amphibians, while the name Reptiliomorpha denotes the other branch. While the actual phylogeny of the modern amphibians is not well understood, their ancestors are descended...

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