Source: Ken FUNAKOSHI, via Wikimedia Commons. Distributed under a CC BY-SA 2.0 license. New research documents manta rays moving their cephalic lobes — the modified fins on either side of their mouths ...
They were the ones that were developing structures in their fins that were beginning to look like limbs. Lobe-finned fishes are a group of bony fishes. It's the structure in their fins -- particularly ...
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