CORALLITE. The corallum secreted by an _Actinozooen_ which consists
of a single polype; or the portion of a composite corallum which
belongs to, and is secreted by, an individual polype.
CORALLUM (from the Latin for Red Coral). The hard structures
deposited in, or by the tissues of an _Actinozooen_,--commonly
called a "coral."
CORIACEOUS (Lat. _corium_. hide). Leathery.
CORYPHODON (Gr. _korus_, helmet; _odous_, tooth). An extinct genus
of Mammals, allied to the Tapirs.
CRANIUM (Gr. _kranion_, the skull). The bony or cartilaginous
case in which the brain is contained.
CRETACEOUS (Lat. _creta_, chalk). The formation which in Europe
contains white chalk as one of its most conspicuous members.
CRINOIDEA (Gr. _krinon_, a lily; _eidos_, form). An order of
_Echinodermata_, comprising forms which are usually stalked, and
sometimes resemble lilies in shape.
CRIOCERAS (Gr. _krios_, a ram; _keras_, a horn). A genus of
_Ammonitidoe_.
CROCODILIA (Gr. _krokodeilos_, a crocodile). An order of Reptiles.
CROSSOPTERYGIDAE. (Gr. _krossotos_, a fringe; _pterux_, a fin). A
sub-order of Ganoids in which the paired fins possess a central
lobe.
CRUSTACEA (Lat. _crusta_, a crust). A class of Articulate animals,
comprising Crabs, Lobsters, &c., characterised by the possession
of a hard shell or crust, which they cast periodically.
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