Semicassis pyrum

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Semicassis pyrum
Semicassis pyrum (top).JPG
A shell of Semicassis pyrum, lateral view
Scientific classification
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S. pyrum
Binomial name
Semicassis pyrum
(Lamarck,1822)

Semicassis pyrum, common name the "pear bonnet" or "common helmet", is a species of large sea snail, a marine gastropod mollusc in the family Cassidae, the helmet shells, bonnet shells and their allies.

A shell of Semicassis pyrum, ventral view showing the parietal callus Semicassis pyrum (base).JPG
A shell of Semicassis pyrum, ventral view showing the parietal callus

Related Research Articles

Scotch bonnet (sea snail) Species of mollusc

The Scotch bonnet is a medium-sized to large species of sea snail, a marine gastropod mollusk in the subfamily Cassinae, the helmet shells and bonnet shells. The common name "Scotch bonnet" alludes to the general outline and color pattern of the shell, which vaguely resemble a tam o' shanter, a traditional Scottish bonnet or cap. The shell is egg-shaped and fairly large, 2 to 4 inches in maximum dimension, with a regular pattern of yellow, orange or brown squarish spots. The surface sculpture of the shell is highly variable: the surface can be smooth and polished, have grooves, be granulated, or even be nodulose on the shoulder of the whorls.

Cassidae Family of gastropods

The Cassidae are a taxonomic family of medium-sized, large, and sometimes very large sea snails commonly called helmet snails or bonnet snails. These are marine gastropod mollusks in the superfamily Tonnoidea and the clade Littorinimorpha.

<i>Semicassis labiata</i> Species of gastropod

Semicassis labiata is a species of large predatory sea snail, a marine gastropod mollusc. This species is in the subfamily Cassinae, the "helmet shells" and "bonnet shells", which feed on sea urchins.

Semicassis royana is a species of medium-sized predatory sea snail, a marine gastropod mollusc in the family Cassidae, the helmet shells and their allies.

Semicassis thomsoni is a species of large predatory sea snail, a marine gastropod mollusc in the family Cassidae, the helmet shells and their allies.

<i>Turbinella pyrum</i> Species of gastropod

Turbinella pyrum, common names the chank shell, sacred chank or chank, also known as the divine conch, sometimes referred to simply as a conch, is a species of very large sea snail with a gill and an operculum, a marine gastropod mollusk in the family Turbinellidae. This species occurs in the Indian Ocean.

<i>Cassis madagascariensis</i> Species of gastropod

Cassis madagascariensis, common name the queen helmet, is a marine gastropod mollusc in the family Cassidae, the helmet shells and bonnet shells.

<i>Phalium areola</i> Species of gastropod

Phalium areola, common name the checkerboard bonnet, is a species of sea snail, a marine gastropod mollusc in the subfamily Cassinae, within the family Cassidae the helmet and bonnet shells. It is also known as the checkerboard bonnet shell.

<i>Semicassis</i> Genus of gastropods

Semicassis is a genus of medium-sized predatory sea snails, marine gastropod molluscs in the subfamily Cassinae within the family Cassidae, the helmet snails and bonnet snails.

<i>Cassis</i> (gastropod) Genus of gastropods

Cassis, common name the helmet shells, is a genus of very large sea snails, marine gastropod mollusks in the family Cassidae, the helmet shells and their allies. This is the type genus of the subfamily Cassinae.

<i>Zonaria pyrum</i> Species of gastropod

Zonaria pyrum, common name the pear cowry, is a species of sea snail, a cowry, a marine gastropod mollusk in the family Cypraeidae, the cowries.

<i>Ranularia pyrum</i> Species of gastropod

Ranularia pyrum, common name: the pear triton, is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae.

<i>Cassis tessellata</i> Species of gastropod

Cassis tessellata, common name : the West African helmet, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

<i>Semicassis bisulcata</i> Species of gastropod

Semicassis bisulcata, common name: the Japanese bonnet, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

<i>Phalium glaucum</i> Species of gastropod

Phalium glaucum, common name the grey bonnet or glaucus bonnet, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

Semicassis inornata is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

Semicassis thachi is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

<i>Phalium</i> Genus of gastropods

Phalium, common name the bonnet shells, is a genus of large sea snails, marine gastropod molluscs in the family Cassidae, the helmet shells, bonnet shells and their allies.

<i>Semicassis undulata</i> Species of gastropod

Semicassis undulata is a Mediterranean species of medium-sized sea snail, a marine gastropod mollusc in the subfamily Cassinae, the helmet snails and bonnet snails.

<i>Semicassis saburon</i> Species of gastropod

Semicassis saburon is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.

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