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Chiton Laevigatus
Chitons () are marine molluscs of varying size in the class Polyplacophora (), formerly known as Amphineura. About 940 extant Extant is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Extant taxon, a taxon which is not extinct, ... and 430 fossil species are recognized. They are also sometimes known as gumboots or sea cradles or coat-of-mail shells or suck-rocks, or more formally as loricates, polyplacophorans, and occasionally as polyplacophores. Chitons have a shell composed of eight separate shell plates or valves. These plates overlap slightly at the front and back edges, and yet articulate well with one another. Because of this, the shell provides protection at the same time as permitting the chiton to flex upward when needed for locomotion over uneven surfaces, and even allows the animal to curl up into a ball when dislodg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonicella Lineata
''Tonicella lineata'', commonly known as the lined chiton, is a species of chiton from the North Pacific. Size and description ''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. This species grows to 5 cm in length. Similar species ''Tonicella lokii'' is extremely similar but has radiating bands on the girdle. ''Tonicella undocaerulea'' is very similar but lacks a dark border to the concentric blue lines on the anterior plate. ''Mopalia spectabilis'' looks superficially similar due to its bright blue wavy lines on the valves, but has a hairy girdle.Baldwin, A. (2007). Illustrated Keys to the chitons (Polyplacophora). Accessed from: It can also be confused with ''Tonicella insignis'' ( Reeve, 184 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
