Corneous is a biological and medical term meaning horny, in other words made out of a substance similar to that of horns and hooves in some mammals. The...

operculum (Latin for 'cover, covering'; pl. opercula or operculums) is a corneous or calcareous anatomical structure like a trapdoor that exists in many...

different from α-keratins at a genetic and structural level. The new term corneous beta protein (CBP) has been proposed to avoid confusion with α-keratins...

as adults, and those shells are composed entirely of conchiolin. Chitin Corneous Mollusc shell Periostracum Sporopollenin Tectin STRUCTURE OF THE CONCHIOLIN...

margin. The columella is smoothish to weakly ridged. The operculum is corneous and of variable thickness, with the nucleus near the anterior end or at...

sculptured. The internal shell is nacreous. They have a brown, entirely corneous, circular, multispiral operculum which fits the aperture snugly. The operculum...

alpha-keratins, the term "beta-keratins" in recent works is replaced by "corneous beta-proteins" or "keratin-associated beta-proteins." β-keratins add much...

The operculum is very small relative to the size of the shell. It is corneous, narrowly elongated, with an apical nucleus, and the impression of the...

especially as applied to some tissues or organs. Contrast coriaceous and corneous. Caropodium Genus of flowering plants in the family Apiaceae. Native range:...

other New World Ampullariids, P. prunella has a calcified, rather than corneous, operculum. MolluscaBase eds. "Pomacea prunella (Hupé, 1857)". MolluscaBase...

excoriation corn- horn Latin cornū bicorn, bicorne, Capricorn, cornea, corneal, corneous, corner, cornicle, corniculate, corniferous, cornification, corniform,...

Samuel M; Zhang, Fucheng; McNamara, Maria E (2023). "Preservation of corneous β-proteins in Mesozoic feathers". Nature Ecology & Evolution. 7 (10): 1706–1713...

as the keratin proteins produce a pre-corneous layer of densely packed epidermal scales creating a thick corneous protective layer. Parts of this keratin...

excoriate cornū corn- horn bicorn, bicorne, Capricorn, cornea, corneal, corneous, corner, cornicle, corniculate, corniferous, cornification, corniform,...

to 12 cm (3.9 to 4.7 in) thick; with generally three ribs; margins are corneous (horn-like) with age, and undulate. Areoles, that is, the small area bearing...

cloaca; the pattern and arrangement of warts; and the presence and number of corneous spines. It might be threatened by habitat loss. Lötters, Stefan; Bornschein...

four to seven weeks. Females lay 10,000 to 100,000 eggs contained in a corneous capsule from which pelagic larvae escape and eventually settle to the bottom...

of the operculum including the material (calcareous in the Naticinae, corneous in the Polinicinae and Sininae) and size, and also the morphology of the...

Zhang, Fucheng; McNamara, Maria E. (21 September 2023). "Preservation of corneous β-proteins in Mesozoic feathers". Nature Ecology & Evolution. 7 (10): 1706–1713...

well-developed eyes, additional sensory tentacles, a strong foot and a corneous, sickle-shaped operculum. The shell and soft parts of living A. gigas serve...

snails with an operculum. The majority of prosobranchs have an operculum, a corneous or calcareous plate situated on the dorsal surface of the foot. In many...

Pilsbry calls them, ‘waxen white’. Some specimens have the apex coloured, corneous or with a yellow hue. This article incorporates CC-BY-3.0 text from the...

the shell attains 19 mm. The shell exhibits a moderate umbilicus, with a corneous texture. The shell shows delicate striations, while its suture bears a...

excoriation corn- horn Latin cornū bicorn, bicorne, Capricorn, cornea, corneal, corneous, corner, cornicle, corniculate, corniferous, cornification, corniform,...

[citation needed] The name "trapdoor snail" refers the operculum, an oval corneous plate that most snails in this clade possess. When the soft parts of the...

is planorboid and somewhat squarish, with a coloration that is ochreous-corneous and paler on the underside. It has a convex shape and a broad umbilicus...

shell tapers uniformly with straight sides. It is thin, faintly yellowish-corneous, and glossy, with delicate wrinkle-like striations. The shell consists...

M.; Zhang, Fucheng; McNamara, Maria E. (2023-09-21). "Preservation of corneous β-proteins in Mesozoic feathers". Nature Ecology & Evolution. 7 (10): 1706–1713...

that of other herbivorous groups. It has three large, corneous crushing plates and ancillary corneous spines, instead of just grinding plates. These crawling...

of the shell of the shell attains 25 mm, its diameter 8 mm. The white, corneous shell has a turreted fusiform shape. It contains 11 whorls, The spiral...