Polyphyletic group of tetrapodomorphs
Holospondyli is a proposed clade of lepospondyls from the Early Carboniferous to the Late Permian[1] that includes the aistopods, the paraphyletic nectrideans, and possibly also Adelospondyli.[2] However, aistopods have since been recovered as stem-tetrapods more primitive than temnospondyls or other groups of lepospondyls.[3]
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