Monoplacophora, 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.
Aplacophora is a presumably paraphyletic taxon. This is a class of small, deep-water, exclusively benthic, marine molluscs found in all oceans of the world.
Neopilina is a highly derived genus of modern monoplacophoran.
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied.
Comitas galatheae, common name the galatheae turrid, is a species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, the turrids and allies
The cephalopods have a long geological history, with the first nautiloids found in late Cambrian strata, and purported stem-group representatives present in the earliest Cambrian lagerstätten.
Tryblidiida is a taxon of monoplacophoran molluscans containing the only extant representatives: 37 species are still alive today, inhabiting the ocean at depths of between 175 and 6,400 metres.
Henning Mourier Lemche was a Danish zoologist.
Laevipilina antarctica is a species of monoplacophoran, a superficially limpet-like marine mollusk. It is found in the Weddell Sea and the Lazarev Sea of Antarctica.
Neopilina bruuni is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found in the southeastern Pacific Ocean, off the coast of South America.
Neopilina rebainsi is a species of monoplacophoran, a superficially limpet-like marine mollusc. The holotype was collected southeast of the Falkland Islands in the Southern Atlantic Ocean. They are dioecious organisms.
Neopilina starobogatovi is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Rokopella euglypta is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Rokopella oligotropha is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is known from only one specimen and a shell fragment collected in the north-central Pacific Ocean.
Vema bacescui is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Vema ewingi is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is found at the northern end of the Peru-Chile Trench and other locations off the coast of Peru.
Vema levinae is a species of monoplacophoran, a superficially limpet-like marine mollusc.
Monoplacophorus zenkevitchi is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is known from only one specimen collected from a depth of 2000 metres in the Pacific Ocean, north of Johnston Island and west of Hawaii.
Adenopilina adenensis is a species of monoplacophoran, a superficially limpet-like marine mollusc. It is known from only one specimen collected from a depth of 3000–4000 metres in the Alula-Fartak Trench of the Gulf of Aden, off the coast of Yemen.
Euthrenopsis venusta is a species of marine gastropod mollusc in the family Buccinidae. It was first described by Baden Powell in 1929. It is endemic to the waters of New Zealand.
