Definitions
from The Century Dictionary.
- noun A generic name originally employed for the hammer-headed sharks: synonymous with Sphyrna.
- noun A generic name of the Port Jackson sharks, giving name to the family Cestraciontidæ: synonymous with Heterodontus.
Etymologies
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Examples
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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.
The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed Hugh Miller 1829
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