Yes, according to Osaka Metropolitan University researchers, who found that suppression of Pcdh8 is essential for the ...

Unlike most living fishes, the two living species of coelacanths ... In most creatures with backbones, vertebrae replace the notochord in the embryonic stage of development.

Despite their simplicity, they possessed a notochord—a stiff rod along their ... Picture these ancient fish-like beings swimming through murky seas, their bodies perfectly adapted to a world ...

In Panderichthids (rhipidistian fish ancestors of amphibians), 2 sets of ossifications ... At anterior end, below the notochord, is the intercentrum. Ichthyostegids (labyrinthodont amphibians) had ...