Monoplacophora / ˌmɒnoʊpləˈkɒfərə /, meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell, inhabiting deep sea environments. Extant representatives were not recognized as such until 1952; previously they were known only from the fossil record, and were thought to have become extinct 375 million years ago. [2]

Aug 1, 2020 · The monoplacophora, common name (deep-sea limpets) are a small, but ecologically important group of single-shelled molluscs. Photogenically they are a sister group to the Aplacophora. The length of the shell in adults ranges from 3mm to 35mm. They are also know by the name Tryblidia.

Mono­pla­cophorans are small and have a sin­gle, cap­like shell, giv­ing them a limpet-like ap­pear­ance. A num­ber of their or­gans (nephridia, heart, etc.) are re­peated se­ri­ally, mak­ing them re­sem­ble metamer­i­cally-arranged species such as an­nelids and arthro­pods.

Apr 15, 2009 · The story of the discovery and study of the Monoplacophora (or Tryblidia) and how they have contributed to our understanding of the evolution of the Mollusca highlights the importance of integrating data from the fossil record with the study of living forms.

monoplacophoran, (class Tryblidia), any of a group of primitive marine mollusks characterized by a single, cap-shaped shell and bilateral symmetry. The term Tryblidia is preferred over Monoplacophoran and Galeroconcha, because both latter terms are taken to include several fossil groups of uncertain relationships.

Monoplacophora [1] is a class of molluscs. They have a cap-like shell and live on the bottom of the sea. [2] 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. [3]

What Are Monoplacophora? Monoplacophora, which means “bearing one plate,” is a polyphyletic superclass of molluscs that formerly lived at the bottom of the deep sea. Its shell resembles a cap.

Jan 9, 2020 · In order to resolve conchiferan relationships and improve understanding of early molluscan evolution, we carefully curated a high-quality data matrix and conducted phylogenomic analyses with broad...

The main characteristics of Monoplacophora include (1) small, deep sea, almost bilaterally symmetrical; (2) have undivided arch shell; (3) body with distinct head and radula, without eyes or sensory tentacles (except around the mouth); (4) foot-retractor muscle; (5) anus median, posterior; (6) mantle cavity large, extending laterally and ...

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.