Little is known just about a Monoplacophora. It have a only, flat, fat bilateral husk & resemble chitons (Class Polyplacophora) or sir thomas more precisely, limpets (Class Gastropoda). Their scale is typically thinly & fragile. A apex of the shell is send on.

Their system segments exhibit the primitive serial repetition by owning similar organs around many segments. This form resembles a anatomy of worms of Phylum Annelida, suggesting a hyperlink between shellfish & segmented worm.

It advance the fat foot. Respiratiin is across 5 or even half a dozen pairs of gills on either side of the system.

Their decreased head lacks eyes or even tentacles. It seem to feed in mud or even bottom detritus.

Neopilina galatheae was a foremost known residing specimen. Last specimens dated from either a Paleozoic. These mollusc come astir Nought.Five to Three.Cypher cm around length.

Taxonomy

The correct sequence Tryblidiida Tryblidioidea

The correct sequence Tryblidioidea Superfamily Tryblidiacea Family Laevipilinidae Genus Laevipilina. H. McLean, 1979 Family Monoplacophoridae Genus Monoplacophorus L. We. Moskaslev, Y. The. Starobogatov & Z. The. Filatova, 1983 Family Neopilinidae Genus Neopilina H. Lemche, 1957 Subgenus Lemchephila L. I personally. Moskalev, Y. The. Starobogatov & Z. The. Filetove, 1983 Subgenus Lemchephyala (= Lemchephila) L. We. Moskalev, Y. The. Starobogatov & Z. The. Filetove, 1983 Genus Micropilina Genus Rokopella Genus Veleropilina Family Tryblidiidae Subfamiliy Neopilininae Genus Neopilina H. Lemche, 1957 Subgenus Neopilina Species Neopilina galathea H. Lemche, 1957 Species Neopilina veleronis R. J. Menzies & W. Layton, 1963 Subfamily Tryblidiinae Family Vemidae Genus Vema. H. Clarke & R. J. Menzies, 1959 Species Vema ewingi. H. Clarke & R. J. Menzies, 1959