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corneous
corneous, a. (ˈkɔːniːəs) [f. L. corne-us horny (f. cornū horn) + -ous.] Of the nature of horn, horny, horn-like. (Now only in technical use.) corneous membrane = cornea. corneous lead = phosgenite. corneous mercury: horn-mercury or calomel.1646 Sir T. Browne Pseud. Ep. iii. xviii. 153 Such as have c...
Oxford English Dictionary
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Corneous
The word corneous is also often used to describe the operculum of a snail, a gastropod mollusc. Corneous opercula are made out of the protein conchiolin.
References
Corneous at dictionary.com
Animal anatomy
Mammal anatomy
Keratins
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Operculum (gastropod)
The operculum (; ) is a corneous or calcareous anatomical structure like a trapdoor that exists in many (but not all) groups of sea snails and freshwater This operculum structure has a corneous base with a heavy calcareous overlay.
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Bostryx ceroplasta
Some specimens have the apex coloured, corneous or with a yellow hue.
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Drillia nodilirata
The white, corneous shell has a turreted fusiform shape.
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Drymaeus inconspicuus
The species is characterized by the corneous-brown upper whorls and the suture, which is bordered by a white line, descending slightly in front.
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Naesiotus bambamarcaensis
locality are slightly smaller than the holotype and vary in their dimensions, but otherwise show the colour pattern characteristic for this species, viz. corneous-brown
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Rabila
Third joint long and frons with a rounded corneous projection. Antennae of male simple with short branches.
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Chloritis planorbina
Shell description
The shell is moderately in size for the genus, without hairs and brownish corneous. The spire is somewhat impressed.
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Tegula montereyi
It is light olivaceous or pale corneous. The spire is conical, with nearly straight outlines. The apex is acute. The sutures are linear. The outer lip is thin, margined with brown or corneous.
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Norelona pyrenaica
Shell description
The shell is narrowly umbilicated, flattened above, thin, pellucid, olivaceous corneous.
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Daudebardia rufa
The shell is perforate, depressed, transversely dilated, slightly striate, very shining, and corneous or rufous in colour.
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Pomacea prunella
Unlike other New World Ampullariids, P. prunella has a calcified, rather than corneous, operculum.
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Anostoma deshayesianum
Shell description
The shell of this species is orbiculate-globose, lightly striate, hardly shining, covered with a corneous epidermis.
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Neverita josephinia
Description
Like other species in this genus, this snail has a corneous operculum.
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