''Eoacmaea'' is a genus of

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

s or true

limpet Limpets are a group of aquatic snails that exhibit a conical shell shape (patelliform) and a strong, muscular foot. Limpets are members of the class Gastropoda, but are polyphyletic, meaning the various groups called "limpets" descended indep ...

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusks in the subclass Patellogastropoda, the true limpets. MolluscaBase eds. (2020). MolluscaBase. Eoacmaea T. Nakano & Ozawa, 2007. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=456551 on 2020-11-03 ''Eoacmaea'' is the only genus in the family Eoacmaeidae, belonging to the superfamily Lottioidea.

Etymology

The generic name ''Eoacmaea'' is composed from the ''Eo'' that mean "early" in Greek and '' Acmaea'', that is the genus of gastropod in family Lottiidae.

Taxonomy

The family Eoacmaeidae was established by Nakano & Ozawa (2007) for the genus ''Eoacmaea''. A cladogram based on sequences of mitochondrial

12S ribosomal RNA Mitochondrially encoded 12S ribosomal RNA (often abbreviated as 12S or 12S rRNA), also known as Mitochondrial-derived peptide MOTS-c or Mitochondrial open reading frame of the 12S rRNA-c is the SSU rRNA of the mitochondrial ribosome. In humans, ...

16S ribosomal RNA 16 S ribosomal RNA (or 16 S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome (SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure. The genes coding for it are referred to as 16S rRNA ...

and cytochrome-c oxidase I (COI) genes showing phylogenic relations of Patellogastropoda by Nakano & Ozawa (2007) and superfamilies based on World Register of Marine Species: ''Eoacmaea'' is the most basal group within Patellogastropoda and ''Eoacmaea'' have diversified from other Patellogastropoda in Tethys Ocean in Triassic or Jurassic about 203 million years ago (limits are from 143 to 279 million years ago).

Species

Species within the genus ''Eoacmaea'' include: * '' Eoacmaea albonotata'' (Smith, 1901) * '' Eoacmaea calamus'' (Crosse & Fischer, 1864) * '' Eoacmaea ceylanica'' (E.A. Smith, 1911) * '' Eoacmaea chamorrorum'' (Lindberg & Vermeij, 1985) * '' Eoacmaea conoidalis'' (Pease, 1868) * '' Eoacmaea ivani'' (Christiaens, 1975) * ''

Eoacmaea javanica ''Eoacmaea javanica'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae ''Eoacmaea'' is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the true ...

'' (Nakano, Aswan & Ozawa, 2005) * ''

Eoacmaea mauritiana ''Eoacmaea mauritiana'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae ''Eoacmaea'' is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the tr ...

'' (Pilsbry, 1891) * ''

Eoacmaea omanensis ''Eoacmaea omanensis'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae ''Eoacmaea'' is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the tru ...

'' (Christiaens, 1975) * ''

Eoacmaea perfestiva ''Eoacmaea perfestiva'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae ''Eoacmaea'' is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the tr ...

'' (Faber, 2004) * ''

Eoacmaea profunda ''Eoacmaea profunda'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae, one of the families of true limpets. ''Eoacmaea profunda'' is the type species in the genus ''Eoacmaea''. Description The si ...

'' (Deshayes, 1863) - type species * ''

Eoacmaea pustulata ''Eoacmaea pustulata'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae, one of the families of true limpets. Description Distribution This species occurs in the Caribbean Sea and in the Gulf of ...

'' (Helbling, 1779) * ''

Eoacmaea semirubida ''Eoacmaea semirubida'' is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Eoacmaeidae ''Eoacmaea'' is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the tr ...

'' (Dall, 1914)

References

{{Taxonbar, from=Q5381563