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Each lens can form clear images, and is composed of relatively large, highly crystallographically aligned grains to minimize light scattering. [22] An individual chiton may have thousands of such ocelli. [18] These aragonite-based eyes [23] make them capable of true vision, [24] though research continues as to the extent of their visual acuity ...
Map of the Southern African coastline showing some of the landmarks referred to in species range statements. The list of marine molluscs of South Africa is a list of saltwater species that form a part of the molluscan fauna of South Africa.
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
The distribution of Chiton magnificus ranges along the Pacific coast of South America from Cape Horn in Chile [3] to San Lorenzo Island in Peru. [2] Although there are old claimed records of this species from the Galápagos Islands, these are now considered incorrect.
In contrast to many other mollusc classes, aplacophorans have no shell, and are instead covered by aragonitic sclerites (calcareous spicules), which can be solid or hollow.. These spicules can be arranged perpendicular to one another within the cuticle to form a skeleton, stick up to form a palisade, or can lie flat against the cutic
Sirenko B.I. 1993. Revision of the system of the order Chitonida (Molluscs: Polyplacophora) on the basis of correlation between the type of gills arrangement and the shape of the chorion processes. Ruthenica 3: 93-117
This Chiton -related article is a stub. You can help Wikipedia by expanding it.
Animals out of water only have about 73% the respiration of submerged animals, and likely incur an oxygen debt while out of water that must be repaid once resubmerged. [4] When submerged, gas exchange occurs by water flowing from the anterior portion of the chiton into the mantle cavity where the ctenidia (gills) reside in the pallial grooves.