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Related to Denticles: Placoid scale
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  • noun

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small pointed ridge on the exoskeleton of an arthropod

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Their skin is covered with tough scales, called denticles, that feel like sandpaper.
The denticles are robust, closely spaced and laterally expanded, more or less of equal size along the whole element and may be slightly smaller close to the posterior end; the cusp is sometimes only slightly larger than the adjacent denticles.
Description.--Medium-size harvestmen, body length 4.5 mm, wide 2.7 mm, oval form, covered with transverse rows of black-tipped denticles (Fig.
(2007), however, verified through histological analysis the presence of an oropharyngeal membrane despite the presence of denticles, as described by Ceccarelli (1997) and Romagosa et al.
Right epandrial lamella with slightly incised inner margin; right surstylus rather wide with four apical processes (median process very wide with marginal denticles, three lateral processes narrow and acute).
In 2012, Harvard University's George Lauder Ian ichthyologist with a focus on biomechanics) showed that a shark skin with denticles outperformed a skin that had been sanded smooth.
Anterior carina with, at least, 8 denticles strongly compressed laterally, even forming a ridge in the platform area.
Medium to large flies; male holoptic; lower calypter narrow, rounded posteriorly, with anteromedian angle distinctly lateral to base of scutellum, not directed towards the scutellum; subcostal sclerite and basal section of stein vein bare (remigium); apical tip ofparaphallus with denticles.
Commonly, the rachidian cusp is relatively coarsely dentate with a strong, lanceolate or acuminate central denticle and 3-5 smaller, also lanceolate, lateral denticles on each side (Fig.
Sexual maturity in males was determined by its secondary sexual characteristics (Didier, 2004) such as, the emergence of the frontal tenaculum, hardened pelvic claspers and denticles present on frontal tenaculum, prepelvic tenacula and pelvic claspers.
In elasmobranchs, these scales are known as placoid scales, or denticles, and in most selachians, a thin layer of mucus lies underneath the denticles to protect the epidermis.
Fore tibia with spur normally developed, 2.3x as long as breadth of tibia; mid tibia without conspicuous denticles on outer surface, and with spurs nearly equal, longer 1.2x length of shorter.