Clack, J.A.
topology · morphology · range
A synthesis of sampled Devonian tetrapods and relatives; it does not identify a direct ancestor or exact clade birth.
A systematic synthesis integrates sampled Devonian tetrapodomorph fishes and early digit-bearing tetrapods into an explicit transition framework. The framework does not identify one direct ancestor, an exact Tetrapodomorpha origin, or a complete global fossil range.
claim:taxon:tetrapodomorphaClack’s synthesis documents tetrapodomorph and early tetrapod samples across the Late Devonian, supporting a 385.3–358.86 Ma transition-study window rather than a global clade origin or duration.
claim:taxon:tetrapodomorpha:range-boundary