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A typical radula comprises a number of bilaterally-symmetrical self-similar rows of teeth rooted in a radular membrane in the floor of their mouth cavity. Some species have teeth that bend with the membrane as it moves over the odontophore, whereas in other species, the teeth are firmly rooted in place, and the entire radular structure moves as one entity.
The food is shown in blue. Muscles that control the radula are shown in brown. The surface of the radula ribbon, with numerous teeth, is shown as a zig-zag line. The odontophore is part of the feeding mechanism in molluscs. It is the cartilage which underlies and supports the radula, a ribbon of teeth. [1]
The height of the shell varies from 25 mm to 62 mm. [4] The width of the shell of type specimen is 19 mm. [4] The height of the shell of type specimen is 28 mm. [4] Conus ebraeus has an easily recognisable small, squat shell, with a rounded, short spire.
The buccal mass is the first part of the digestive system, and consists of the mouth and pharynx. The mouth includes a radula, and in most cases, also a pair of jaws.The pharynx can be very large, especially in carnivorous species.
In paleontology, denticle characteristics such as size and density (denticles per unit distance) are used to describe and classify fossilized teeth, especially those of dinosaurs. Denticles are also present on the teeth of varanoid lizards, sharks, and mammals. [1] The term is also used to describe the analogous radular teeth of mollusks. [2 ...
The radular teeth of chitons are made of magnetite, and the iron crystals within these may be involved in magnetoreception, [32] the ability to sense the polarity and the inclination of the Earth's magnetic field. Experimental work has suggested that chitons can detect and respond to magnetism.
The radula may bear one or more teeth per row; where there is more than one tooth, there is no central radular tooth. [3] The radula grows by dividing existing teeth in two, or by adding a new tooth at the centre of the radular row. [3] The salivary glands are very elaborate, and are an important character for taxonomy. Next to the mouth they ...
The teeth are composed of goethite, an iron-based mineral, woven in a particular way into grouped 1μ thick bundles. [ 8 ] [ 9 ] Many limpets create a home "scar" on the rock to which they always return between tides, the scar provides excellent protection from predators as well as helping to prevent dehydration during low tides.