Topaginella

Last updated

Topaginella
Temporal range: Miocene
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Caenogastropoda
clade Hypsogastropoda
clade Neogastropoda
Superfamily:
Muricoidea
Family:
Cystiscidae [ citation needed ]
Subfamily:
Cystiscinae
Genus:
Topaginella

Laseron, 1957

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.

Contents

This genus is extinct.

Shell description

Shell minute, pyriform, strongly narrowed anteriorly; spire low; lip thickened, strongly denticulate; external varix probably absent (needs to be confirmed); distinct axial costae present; siphonal notch absent; columella multiplicate, with combined total of usually 8 plications plus parietal lirae.

Type species

The type species of the genus Topaginella is Marginella octoplicata Tenison Woods, 1877 †; OD (M)

Remarks: The type species seems to be unique (a monotypic genus). The multiplicate columella and lack of a siphonal notch place it near Cystiscus, but the pyriform shape, exserted spire, denticulate lip, and fine axial costae render it distinct.

Fossil record

This genus is known from the Miocene of Australia.

Related Research Articles

Cystiscidae 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.

<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>Extra extra</i> Species of gastropod

Extra extra or Marginella extra 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.

<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.

Plesiocystiscinae Subfamily of gastropods

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

Cystiscinae 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.

Persiculinae 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>Leucosyrinx kantori</i> Species of gastropod

Leucosyrinx kantori is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

<i>Bellaspira melea</i> Species of gastropod

Bellaspira melea is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.

<i>Globidrillia ferminiana</i> Species of gastropod

Globidrillia ferminiana is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.

<i>Borsonia</i> Genus of gastropods

Borsonia is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.

<i>Borsonia mitromorphoides</i> Extinct species of gastropod

Borsonia mitromorphoides is an extinct species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

<i>Maoritomella multiplex</i> Species of gastropod

Maoritomella multiplex is a species of sea snail, a marine gastropod mollusk in the family Borsoniidae.

<i>Antiguraleus ula</i> Species of gastropod

Antiguraleus ula is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.

<i>Mangelia subaustralis</i> Species of gastropod

Mangelia subaustralis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae

Hindsiclava calligonoides is an extinct species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, the turrids and allies.

<i>Leucosyrinx eremita</i> Species of gastropod

Leucosyrinx eremita is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.

References


    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.