Extra extra

Last updated

Extra extra
Extra extra (MNHN-IM-2000-557).jpeg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Family: Cystiscidae
Subfamily: Cystiscinae
Genus: Extra
Species:
E. extra
Binomial name
Extra extra
(Jousseaume, 1894) [1]
Synonyms

Extra extra or Marginella extra [2] is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae. Some malacologists place this genus more simply in the family Marginellidae.

Contents

Taxonomy

Marginella extra was originally described under name Extra extra by French zoologist Félix Pierre Jousseaume in 1894. He placed this species to the monotypic genus Extra Jousseaume, 1894. Dautzenberg (1929) [3] moved this species into genus Marginella .

Diagnosis

The shell is minute, white, semitranslucent; prominent axial costae present; spire sunken but not immersed; lip strongly thickened, smooth, lacking denticulation, flared posteriorly; siphonal notch absent; posterior notch absent; distinct parietal callus "shield" present; columella multiplicate, with 5 plications plus parietal lirae, plications slightly excavated inside aperture due to parietal callus deposits.

Distribution and habitat

Recorded only from western Indian Ocean along Madagascar, apparently in shallow water.

Related Research Articles

<span class="mw-page-title-main">Marginellidae</span> Family of sea snails

Marginellidae, or the margin shells, are a taxonomic family of small, often colorful, sea snails, marine gastropod molluscs in the clade Neogastropoda.

<span class="mw-page-title-main">Cystiscidae</span> Family of sea snails

Cystiscidae is a taxonomic family of minute sea snails, marine gastropod mollusks or micromollusks.

<i>Plesiocystiscus</i> Genus of gastropods

Plesiocystiscus is a genus of minute predatory sea snails, marine gastropod mollusks or micromollusks in the family Cystiscidae.

<i>Cystiscus</i> Genus of gastropods

Cystiscus is a taxonomic genus of minute sea snails, marine gastropod mollusks or micromollusks.

Topaginella is a genus of minute fossil sea snails, marine gastropod mollusks or micromollusks in the family Cystiscidae. Like all of the related genera, this genus is sometimes still classified in the family Marginellidae.

<i>Crithe</i> Genus of gastropods

Crithe is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Cystiscidae. This genus is sometimes still placed within the Marginellidae.

<i>Persicula</i> Genus of gastropods

Persicula is a taxonomic genus of minute to small predatory sea snails, marine gastropod mollusks. It includes several species which are micromollusks.

<span class="mw-page-title-main">Plesiocystiscinae</span> Subfamily of gastropods

Plesiocystiscinae is a subfamily of minute sea predatory sea snails, marine gastropod mollusks or micromollusks in the infraorder Neogastropoda.

<span class="mw-page-title-main">Cystiscinae</span> Subfamily of gastropods

Cystiscinae are a taxonomic subfamily of minute sea snails. These are marine gastropod mollusks or micromollusks in the family Cystiscidae, and the clade Neogastropoda.

<span class="mw-page-title-main">Persiculinae</span> Subfamily of sea snails

Persiculinae is a taxonomic subfamily of minute to small predatory sea snails, marine gastropod mollusks. This subfamily includes several species which are micromollusks.

<i>Bullata</i> Genus of gastropods

Bullata is a genus of small to large sea snails, marine gastropod mollusks in the family Marginellidae, the margin snails.

<i>Conus milneedwardsi</i> Species of sea snail

Conus milneedwardsi, known to collectors as the "Glory of India", is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

<i>Phasianella solida</i> Species of gastropod

Phasianella solida, common name the solid pheasant, is a species of sea snail, a marine gastropod mollusk in the family Phasianellidae.

<i>Turbo imperialis</i> Species of gastropod

Turbo imperialis is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.

<i>Cystiscus vavauensis</i> Species of gastropod

Cystiscus vavauensis is a species of very small sea snail, a marine gastropod mollusk or micromollusk in the family Cystiscidae.

<i>Marginella virgula</i> Species of mollusc

Marginella virgula is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.

<i>Chicoreus microphyllus</i> Species of gastropod

Chicoreus microphyllus, common name the curly murex, is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.

<i>Marginella gloriosa</i> Species of gastropod

Marginella gloriosa is a species of sea snail, a marine gastropod mollusk in the family Marginellidae, the margin snails.

<span class="mw-page-title-main">Marginellinae</span> Subfamily of sea snails

Marginellinae is a taxonomic subfamily within the larger family of Marginellidae, a group of small sea snails, marine gastropod molluscs in the superfamily Volutoidea.

<i>Miralda gemma</i> Species of gastropod

Miralda gemma is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.

References

  1. 1 2 Jousseaume, F.P. (1894). "Diagnoses des coquilles de nouveaux mollusques". Bulletin de la Société Philomathique de Paris. 8 (6): 98–105. Retrieved 4 July 2020.
  2. WoRMS (2009). Extra extra (Jousseaume, 1894). Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=217193 on 4 December 2010
  3. Dautzenberg, Ph. (1929). Mollusques testaces marins de Madagascar. Faune des Colonies Françaises, Tome III