from The Century Dictionary and Cyclopedia
- n. A generic name originally employed for the hammer-headed sharks: synonymous with Sphyrna.
- n. A generic name of the Port Jackson sharks, giving name to the family Cestraciontidæ: synonymous with Heterodontus.
Sorry, no etymologies found.
Silurian rocks, -- we possess only fragments, which, however, sufficiently indicate, from their resemblance to the corresponding parts of an existing shark, -- the cestracion, -- that they belonged to fishes furnished with the two pairs of fins now so generally recognized as the homologues of the fore and hinder limbs in quadrupeds.