Imagine a world where the boundaries between “fish” and “not-fish” blur, where the ancestors of birds and mammals once swam ...

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.

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