Linked from
The 44 pages that link to Tetrapod, each with the reason it gives.
DevonianRelated: Devonian tetrapods document vertebrate transitions toward life on land.
CoelacanthRelated: Coelacanths and tetrapods share ancestry within the lobe-finned vertebrates.
LungfishRelated: Lungfish are the closest living fish relatives of the tetrapod lineage.
Bony fishRelated: Tetrapods evolved within the lobe-finned branch of the bony-fish lineage.
Late DevonianRelated: The first tetrapods appeared during the Devonian, near the epoch's close.