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Most classification schemes in use today are based, at least in part, on Pilsbry's Manual of Conchology (1892–1894), extended and revised by Kaas and Van Belle (1985–1990). Since chitons were first described by Linnaeus (1758), extensive taxonomic studies at the species level have been made.
The genus Chiton has been split into several subgenera as follows: [2]. Subgenus Chiton (Chiton) Linnaeus, 1758. Chiton (Chiton) albolineatus Broderip & Sowerby, 1829; Chiton (Chiton) articulatus Sowerby in Broderip & Sowerby, 1832
Chitonidae is a family of chitons or polyplacophorans, marine mollusks whose shell is composed of eight articulating plates or valves. There are fifteen extant genera in three subfamilies . Subfamilies and genera
Acanthochitonidae is a family of marine mollusks belonging to the class Polyplacophora, commonly known as chitons. Species are widely distributed throughout the world's oceans, but are most commonly found in the shallow waters of the Pacific Ocean, from Alaska to Chile.
Tonicella lineata is a very colorful chiton, having blue, purple or black straight or zig-zag lines on each of the eight valves. The background color of the valves is often brown or red, but can also be bright blue or yellow to orange. The girdle is hairless and brown to red or pink, often with regular yellow or white patches.
The gumboot chiton (Cryptochiton stelleri), also known as the giant western fiery chiton or giant Pacific chiton, is the largest of the chitons, growing to 36 cm (14 in) and capable of reaching a weight of more than 2 kg (4.4 lb).
Chiton tuberculatus, the West Indian green chiton, is a species of chiton, a marine polyplacophoran mollusk in the family Chitonidae, the typical chitons. [ 1 ] [ 2 ] [ 3 ] Description
Chiton squamosus can reach a length of 50–75 millimetres (2.0–3.0 in). The seven valves are dull, ashen-gray with dull-brown, irregular, wide, longitudinal stripes. Girdle alternates pale stripes of grayish white and grayish green. [3] [4]