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Whorl (mollusc), the Glossary

Index Whorl (mollusc)

A whorl is a single, complete 360° revolution or turn in the spiral or whorled growth of a mollusc shell.[1]

Table of Contents

  1. 27 relations: Alan Solem, Ammonoidea, Aperture (mollusc), Apex (mollusc), Body whorl, Cephalopod, Cone, D'Arcy Wentworth Thompson, David M. Raup, Gastropoda, Haliotis asinina, Helix, Mesozoic, Mollusc shell, Nautilus, Neontology, Nerineidae, On Growth and Form, Planispiral, Protoconch, Spiral, Spire (mollusc), Spirula, Taxon, Terebridae, Turritellidae, Whorl.

  2. Mollusc shells

Alan Solem

George Alan Solem (21 June 1931 – 26 March 1990),Coan E. V., Kabat A. R. & Petit R. E. (2009).

See Whorl (mollusc) and Alan Solem

Ammonoidea

Ammonoids are extinct spiral shelled cephalopods comprising the subclass Ammonoidea.

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Aperture (mollusc)

The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc.

See Whorl (mollusc) and Aperture (mollusc)

Apex (mollusc)

In anatomy, an apex (adjectival form: apical) is part of the shell of a mollusk. Whorl (mollusc) and apex (mollusc) are mollusc shells.

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Body whorl

The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. Whorl (mollusc) and body whorl are mollusc shells.

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Cephalopod

A cephalopod is any member of the molluscan class Cephalopoda (Greek plural κεφαλόποδες,; "head-feet") such as a squid, octopus, cuttlefish, or nautilus.

See Whorl (mollusc) and Cephalopod

Cone

A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex.

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D'Arcy Wentworth Thompson

Sir D'Arcy Wentworth Thompson CB FRS FRSE (2 May 1860 – 21 June 1948) was a Scottish biologist, mathematician and classics scholar.

See Whorl (mollusc) and D'Arcy Wentworth Thompson

David M. Raup

David M. Raup (April 24, 1933 – July 9, 2015) was a University of Chicago paleontologist.

See Whorl (mollusc) and David M. Raup

Gastropoda

Gastropods, commonly known as slugs and snails, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda.

See Whorl (mollusc) and Gastropoda

Haliotis asinina

Haliotis asinina, common name the ass's-ear abalone, is a fairly large species of sea snail, a tropical gastropod mollusk in the family Haliotidae, the abalones, also known as ormers or pāua.

See Whorl (mollusc) and Haliotis asinina

Helix

A helix is a shape like a cylindrical coil spring or the thread of a machine screw.

See Whorl (mollusc) and Helix

Mesozoic

The Mesozoic Era is the penultimate era of Earth's geological history, lasting from about, comprising the Triassic, Jurassic and Cretaceous Periods.

See Whorl (mollusc) and Mesozoic

Mollusc shell

The mollusc (or molluskOften spelled mollusk shell in the USA; the spelling "mollusc" are preferred by) shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca, which includes snails, clams, tusk shells, and several other classes. Whorl (mollusc) and mollusc shell are mollusc shells.

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Nautilus

The nautilus is an ancient pelagic marine mollusc of the cephalopod family Nautilidae.

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Neontology

Neontology is a part of biology that, in contrast to paleontology, deals with living (or, more generally, recent) organisms.

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Nerineidae

The Nerineidae is an extinct taxonomic family of fossil sea snails, marine gastropod mollusks in the informal group Lower Heterobranchia.

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On Growth and Form

On Growth and Form is a book by the Scottish mathematical biologist D'Arcy Wentworth Thompson (1860–1948).

See Whorl (mollusc) and On Growth and Form

Planispiral

Planispiral is a condition in which a tubicolous shell is coiled in a single horizontal plane and the diameter increases away from the axis of coiling. Whorl (mollusc) and Planispiral are mollusc shells.

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Protoconch

A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell which occurs in some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. Whorl (mollusc) and protoconch are mollusc shells.

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Spiral

In mathematics, a spiral is a curve which emanates from a point, moving farther away as it revolves around the point.

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Spire (mollusc)

A spire is a part of the coiled shell of molluscs. Whorl (mollusc) and spire (mollusc) are mollusc shells.

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Spirula

Spirula spirula is a species of deep-water squid-like cephalopod mollusk.

See Whorl (mollusc) and Spirula

Taxon

In biology, a taxon (back-formation from taxonomy;: taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit.

See Whorl (mollusc) and Taxon

Terebridae

The Terebridae, commonly referred to as auger shells or auger snails, is a family of predatory marine gastropods in the superfamily Conoidea.

See Whorl (mollusc) and Terebridae

Turritellidae

Turritellidae, with the common name "tower shells" or "tower snails", is a taxonomic family of small- to medium-sized sea snails, marine gastropod molluscs in the Sorbeoconcha clade.

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Whorl

A whorl is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).

See Whorl (mollusc) and Whorl

See also

Mollusc shells

References

[1] https://en.wikipedia.org/wiki/Whorl_(mollusc)

Also known as Mollusc whorls.