Sharks have between 5 and 7 gill slits located on the side of their head. Sharks have long captured our fascination with their sleek bodies, sharp teeth, and predatory success. Yet, beneath this ...
(1) The hyoid gill-slit. It is commonly accepted that in all living fishes there is no sign of a ventral part of the hyoid (facial) gill slit, that the latter has vanished entirely, and that all that ...
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