Conus mus (mouse cone snail shell) (St. Thomas, Virgin Islands) 3

Conus mus Hwass, 1792 - mouse cone snail shell, modern (latest Holocene). (apical view)

The gastropods (snails & slugs) are a group of molluscs that occupy marine, freshwater, and terrestrial environments. Most gastropods have a calcareous external shell (the snails). Some lack a shell completely, or have reduced internal shells (the slugs & sea slugs & pteropods). Most members of the Gastropoda are marine. Most marine snails are herbivores (algae grazers) or predators/carnivores.

The conid gastropods (cone shells) are fascinating marine snails for a couple reasons - they have attractively-shaped, colorful shells and they are killers. The conids are predatory, as are many other marine snails, but they take down their prey in an unusual fashion. The radula of most snails is a mineralized or heavily sclerotized mass of small teeth that scrapes across a substrate during feeding. Conid snails have a toxoglossate radula - one that has been evolutionarily modified into tiny, unattached, toxin-bearing, harpoon-like darts that can be fired at prey. Each dart is an individual tooth. The nickname "killer snails" is well deserved (even people have been killed). Some species have incredibly powerful toxins, while in other species the toxin has little effect on humans.

Classification: Animalia, Mollusca, Gastropoda, Neogastropoda, Conoidea, Conidae

Locality: Brewer's Bay, St. Thomas, western Virgin Islands
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Info. at:
en.wikipedia.org/wiki/Conus_mus
and
en.wikipedia.org/wiki/Conus
and
en.wikipedia.org/wiki/Conidae

Some rights reserved

Taken on: September 29, 2020

Tags:

Conus

mus

cone

cones

conid

conids

snail

snails

shell

shells

gastropod

gastropods

Conidae

seashell

seashells

St.

Thomas

Island

Virgin

Islands

Brewer's

Bay « less

Sets appears in: • Virgin Islands (Caribbean Sea) • Cone snails (Mollusca, Gastropoda, Conidae) more » • Gastropods (Modern) « less

Stats: 216 views

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