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A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.

Rhynchotreta Mollusk

A mollusk radiate from the Paleozoic time, Rhynchotreta cuneata from the United States and Great Britain.

"River-Mussel (Anodonta fragilis), North Carolina."-Whitney, 1902

River Mussel

"River-Mussel (Anodonta fragilis), North Carolina."-Whitney, 1902

This illustration shows the calcareous shell Rotalia globulosa. These shells are mostly very small, and yet through their abundance they have been very important in limestone-making.

Rotalia Globulosa

This illustration shows the calcareous shell Rotalia globulosa. These shells are mostly very small,…

The scallop (Hinnites pusio) is a marine bivalve mollusk from the Pectinidae family.

Scallop

The scallop (Hinnites pusio) is a marine bivalve mollusk from the Pectinidae family.

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphander

Scaphander lignarius is a species of gastropods in the Scaphandridae family.

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period. "A genus of ammonites, or fossil ammonoid cephalopods of scaphoid shape, typical of the family <i>Scaphitidae</i>; the scaphites. The have the early walls regularly involute, but the last whorl detached, and straight for some distance, when it becomes again recurved toward the body." &mdash;Whitney, 1889

Scaphites equalis, Extinct Cephalopod Fossil

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period. "A…

A typical foraminiferal shell shaped more or less like a football in form (diagrammatical view).

Schwagerina Verbecki

A typical foraminiferal shell shaped more or less like a football in form (diagrammatical view).

"The globular crest of this animal is made up of several hundred polygonal pieces of different sizes, of every variety of outline, and so accurately fitted to each other that the lines uniting them are nearly inperceptible." &mdash; Goodrich, 1859

Sea-urchin without spines

"The globular crest of this animal is made up of several hundred polygonal pieces of different sizes,…

24. Various corals, 25. Razor-shell, 26. Cockle, 27. Various winkels, 28. Shore crab, 29. Father lasher, 30. Periophthalamus, 31. Lobworm, 32. Gunnel

Types of Seashore Life

24. Various corals, 25. Razor-shell, 26. Cockle, 27. Various winkels, 28. Shore crab, 29. Father lasher,…

Cockle shell.

Shell

Cockle shell.

An illustration of a Club-shell fossil from the Tertiary period. The Tertiary is a an out-of-date term for a geologic period 65 million to 1.8 million years ago. The Tertiary covered the time span between the superseded Secondary period and an out-of-date definition of the Quaternary period. The period began with the demise of the non-avian dinosaurs in the Cretaceous&ndash;Tertiary extinction event, at start of the Cenozoic era, spanning to beginning of the most recent Ice Age, at the end of the Pliocene epoch.

Shell Fossil

An illustration of a Club-shell fossil from the Tertiary period. The Tertiary is a an out-of-date term…

"Noted for a very long proboscis, sometimes twice the length of the shell. The latter is turretted, smooth, white, and spotted with light red." &mdash; Goodrich, 1859

Bishop's mitre shell

"Noted for a very long proboscis, sometimes twice the length of the shell. The latter is turretted,…

Following the species of simple septa and straight shells, came the Trocholites ammoulus, of simple septa and coiled chambered shells of the Trenton period.

Coiled Chambered Shell

Following the species of simple septa and straight shells, came the Trocholites ammoulus, of simple…

The Clymenia Sedgwickii represents a coiled shell with angulated or bent septa.

Coiled Chambered Shell

The Clymenia Sedgwickii represents a coiled shell with angulated or bent septa.

Goniatites are extinct ammonoids, shelled cephalopods related to squid, octopus, and belemnites, that form the order Goniatitida. The goniatites all possessed an external shell, which is divided internally into chambers. The animal lived in the largest of the external chambers, and the internal chambers would have been filled with gas, making the animal buoyant in the water.

Coiled Chambered Shell

Goniatites are extinct ammonoids, shelled cephalopods related to squid, octopus, and belemnites, that…

An illustration of a coin shell.

Coin Shell

An illustration of a coin shell.

The Exterior Scallop Shell was used as a water basin in the form of a shallow dish and as a decorative background for vases and busts. It was extensively used during the later Renaissance.

Exterior Scallop Shell

The Exterior Scallop Shell was used as a water basin in the form of a shallow dish and as a decorative…

The Interior Scallop Shell was used as a water basin in the form of a shallow dish and as a decorative background for vases and busts. It was extensively used during the later Renaissance.

Interior Scallop Shell

The Interior Scallop Shell was used as a water basin in the form of a shallow dish and as a decorative…

A metallic cartridge used in small arms and small artillery pieces.

Military Shell

A metallic cartridge used in small arms and small artillery pieces.

The Nautilus Shell is a marine creature, it is shown in its natural form. It was usually placed on feet and elegantly mounted in metal, and used as a drinking vessel.

Nautilus Shell

The Nautilus Shell is a marine creature, it is shown in its natural form. It was usually placed on feet…

This Scallop Design Shell was a Louis XVI style. It was used on the lower end of a panel.

Scallop Design Shell

This Scallop Design Shell was a Louis XVI style. It was used on the lower end of a panel.

This Scallop Design Shell was designed by sculptor Lehr of Berlin, Germany.

Scallop Design Shell

This Scallop Design Shell was designed by sculptor Lehr of Berlin, Germany.

This Scallop Design Shell was used as a decoration of a niche. A design commonly used during the Late Renaissance.

Scallop Design Shell

This Scallop Design Shell was used as a decoration of a niche. A design commonly used during the Late…

The Snail Shell was commonly used during the Renaissance as a drinking vessel.

Snail Shell

The Snail Shell was commonly used during the Renaissance as a drinking vessel.

Chambered shell, endless in their variations, in the earliest periods were a species with simple septa and straight shells as in Ormoceras tenuifilum, which shows a large annulated central siphon.

Straight Chambered Shell

Chambered shell, endless in their variations, in the earliest periods were a species with simple septa…

Baculites is a genus of extinct marine animals in the Phylum Mollusca and Class Cephalopoda. They are a nearly straight-shelled type of heteromorph ammonite. This fragment is of a straight chambered shell, Baculites ovatus of Mesozoic Time, belonging to the Ammonite family.

Coiled Chambered Shell

Baculites is a genus of extinct marine animals in the Phylum Mollusca and Class Cephalopoda. They are…

"The top shell, <em>T. marmoratus</em>, has a turbinated solid shell, with convex whorls." &mdash; Goodrich, 1859

Top shell

"The top shell, T. marmoratus, has a turbinated solid shell, with convex whorls." — Goodrich,…

A diagram illustrating the by using a fixed revolver head while spinning the lathe to create the cone shape.

Navy Ordnance Shells

A diagram illustrating the by using a fixed revolver head while spinning the lathe to create the cone…

The shell of a Slit Worm Snail (Siliquaria anguina). The species is a gastropod mollusc that has an eloongated shell with a narrow slit down its length.

Slit Worm Snail

The shell of a Slit Worm Snail (Siliquaria anguina). The species is a gastropod mollusc that has an…

"Soft unsegmented bodies, bilaterally symmetrical, enveloped by a leathery mantle, which usually develops a hard shell-covering, or external skeleton; a symmetrical nervous system, consisting of several connected nerve bunches, or ganglia. Such is the snail." &mdash; Hinman, 1888

Snail

"Soft unsegmented bodies, bilaterally symmetrical, enveloped by a leathery mantle, which usually develops…

<i>Helix pomatia</i>. "A large-shelled, edible" snail, also called the Burgundy snail or escargot when used in cooking. —Whitney, 1889. <p>This illustration shows only the shell and not the animal. It is an air-breathing, land snail.

Roman Snail Shell

Helix pomatia. "A large-shelled, edible" snail, also called the Burgundy snail or escargot when used…

<i>Ammonites bisulcatus</i>. "Same as ammonite; from an old popular notion that these shells were coiled snakes petrified." &mdash;Whitney, 1889

Snakestone - Ammonite

Ammonites bisulcatus. "Same as ammonite; from an old popular notion that these shells were coiled snakes…

An ancient mollusk from the Paleozoic time, Spirifer mucronatus.

Sprifer Mollusk

An ancient mollusk from the Paleozoic time, Spirifer mucronatus.

Spirifer sowerbyi, an extinct brachiopod.

Spirifer sowerbyi

Spirifer sowerbyi, an extinct brachiopod.

A modern shell-bearing pteropod.

Styliola Vitrea

A modern shell-bearing pteropod.

A characteristic modern Brachiopod of the northern Atlantic coast.

Terebratulina Septentrionalis

A characteristic modern Brachiopod of the northern Atlantic coast.

"A relief from the Column of Trajan, Rome. The name testudo, a tortoise (shell), was applied to the covering made by a body of soldiers who placed their shields over their heads. The shields fitted so closely together that men could walk on them and even horses and chariots could be driven over them."&mdash;Webster, 1913

A Testudo

"A relief from the Column of Trajan, Rome. The name testudo, a tortoise (shell), was applied to the…

This illustration shows the calcareous shell Textilaria globulosa. These shells are mostly very small, and yet through their abundance they have been very important in limestone-making.

Textilaria Globulosa

This illustration shows the calcareous shell Textilaria globulosa. These shells are mostly very small,…

"It has an aperture at each end; the animal inhabiting it is of a cylindrical form, and inclosed in a sac-like mantle." &mdash; Goodrich, 1859

Elephant's tooth

"It has an aperture at each end; the animal inhabiting it is of a cylindrical form, and inclosed in…

This illustration shows the calcareous shell Triloculina Josephina. These shells are mostly very small, and yet through their abundance they have been very important in limestone-making.

Triloculina Josephina

This illustration shows the calcareous shell Triloculina Josephina. These shells are mostly very small,…

"One of the Nereides, Triton. A sea deity, son of Neptune and Amphrodite. His lower extremities were that of a fish." &mdash; Anthon, 1891

Triton

"One of the Nereides, Triton. A sea deity, son of Neptune and Amphrodite. His lower extremities were…

"The marine trumpet or Triton's shell, <em>Triton variegatus</em>, is elegantly variegated with red and bay, the edge of the outer lip spotted with black. It is a native of the Asiatic West Indian seas." &mdash; Goodrich, 1859

Marine trumpet-shell

"The marine trumpet or Triton's shell, Triton variegatus, is elegantly variegated with red…

"The large <em>Helmet-Shells</em>, of the genus <em>Cassis</em> are used in the manufacture of cameos." &mdash; Goodrich, 1859

Cassis tuberosa

"The large Helmet-Shells, of the genus Cassis are used in the manufacture of cameos."…

A fossilized shell.

Turrillites

A fossilized shell.

The leatherback turtle (once known as the leathery turtle) is remarkable among turtles for its shell; which is covered in leathery skin rather than hard plates.

Leatherback turtle

The leatherback turtle (once known as the leathery turtle) is remarkable among turtles for its shell;…

Skeleton of a turtle.

Skeleton of a turtle

Skeleton of a turtle.

"The turtle, adapted for swimming and diving, the extremities being relatively larger than in the seal, sea-bear, and walrus. The anterior extremities have a thick anterior margin and a thin posterior one, and in this respect resemble wings."&mdash;Pettigrew, 1874

The Turtle

"The turtle, adapted for swimming and diving, the extremities being relatively larger than in the seal,…

"These animals, called <em>Umbrella-Shells</em>, are furnished with a shell, which, however, is often concealed by the mantle; the foot is usually large, and the feather-like gill hidden between a fold of the mantle and the foot. The shell is sometimes limpet-shaped. The <em>Umbrella Mediterranea</em> and the <em>U. Indica</em> are the only known species." &mdash; Goodrich, 1859

Mediterranean umbrella-shell

"These animals, called Umbrella-Shells, are furnished with a shell, which, however, is often…

"The animal in this case is inclosed in a cacareous tube, the anterior extremity of which is closed by a curious perforated disk; the other end is ornamented with several ruffle-like bands." &mdash; Goodrich, 1859

Tube of the water-pot shell magnified

"The animal in this case is inclosed in a cacareous tube, the anterior extremity of which is closed…

"The animal in this case is inclosed in a cacareous tube, the anterior extremity of whichi is closed by a curious perforated disk; the other end is ornamented with several ruffle-like bands." &mdash; Goodrich, 1859

Tube of the watering-pot shell

"The animal in this case is inclosed in a cacareous tube, the anterior extremity of whichi is closed…

"The shell is mostly white and lustrous; turreted and many-whorled; the animal has a proboscis-like mouth, tentacles close together, long, and pointed, and the eyes near their outer bases." &mdash; Goodrich, 1859

Wentle-trap

"The shell is mostly white and lustrous; turreted and many-whorled; the animal has a proboscis-like…

o - operculum; s - siphon

Whelk

o - operculum; s - siphon

"The shell of the thorny woodcock, <em>M. tribulus</em>, sometimes called <em>Venus's Comb</em>, is much prized by collectors, if in a perfect state; it is often very delicate and beautiful." &mdash; Goodrich, 1859

Thorny Woodcock

"The shell of the thorny woodcock, M. tribulus, sometimes called Venus's Comb, is…