An Example of Phylum Mollusca: Neopilina.

Monoplacophora ?Archinacella arca aff. (?) Archinacella arca aff. Wahlman, 1992 - Description and Ecology from Wahlman, 1992 (?) Archinacella arca aff. Wahlman, 1992, p. 83, pl. 3, fig. 7-10. Description: Shell is medium sized, nearly circular in outline, quite high and strongly convex dorsally and posteriorly. The lateral slopes are nearly.

Monoplacophorans are a small group of Cambro-Silurian fossils in the family Tryblidiidae. The single modern genus is Neopilina. In 1952, the Galathea expedition dredged 10 living specimens of Neopilina galathea from a deep trench of the Pacific Ocean.

Though chitons are important members of the molluscan clade, occupying a basal position in the phylogeny, and have interesting diversity and life history traits, our knowledge of the group is spartan in comparison to other mollusc clades. All chitons are marine and the group has a worldwide distribution. Most live in the rocky intertidal zone or shallow sublittoral (just below the low tide.

Monoplacophora (phylum Mollusca) A class of primitive, almost bilaterally symmetrical, univalved molluscs, whose limpet-shaped shell of calcium carbonate consists of an external periostracum, a prismatic layer, and an internal, nacreous deposit. The circular foot and radula are ventrally placed, and the internal organs appear to be metamerically segmented, although some authorities question.

This class contains the cephalopods, animals commonly known as squid, cuttlefish, octopus, and nautilus. The giant squid is the largest of all mollusks. Most cephalopods are highly adapted for swimming. The body mass is very tall. There is no foot.

Monoplacophora, Lemche, 1957 ( Fig. 1A, B, C), constitutes a class of living Mollusca. The calcareous shell is bilaterally symmetrical, oval, and with a subcentral to anterior apex so that it is cap-shaped to spoon-shaped. Muscles or muscle scars are paired ( Fig. 1E, G). The class is extinct except for one Holocene genus.

Mollusca. Introduction The Mollusca, common name of molluscs or mollusks, are a large phylum of invertebrate animals. There are around 100,000 recognized extant species of molluscs. Mollusca is the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats.

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Monoplacophora a class of Mollusca which contains Neopilina, a limpet-like deep-sea form, which is known mainly from extinct forms.

Monoplacophora is a class of molluscs.They have a cap-like shell and live on the bottom of the sea. They were well-known as a fossil group from the Cambrian to the Devonian.One species was dredged up from the Pacific Ocean off Mexico in 1952. It was found to be a Monoplacophoran, and given the genus of Neopilina.This was one of the most remarkable modern discoveries of a 'living fossil', and a.

Monoplacophora on Wikimedia Commons. Wikimedia Commons Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living Organisms.

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