Gastropoda - Wikipedia
The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian.
Gastropod | Definition, Examples, & Facts | Britannica
2024年10月14日 · Gastropod, any member of more than 65,000 animal species belonging to the class Gastropoda, the largest group in the phylum Mollusca. The class is made up of the snails, which have a shell into which the animal can withdraw, and the slugs, which are snails whose shells have been reduced to an internal fragment or lost.
Portal:Gastropods - Wikipedia
The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian .
Class Gastropoda - Digital Atlas of Ancient Life
2021年9月16日 · Gastropods are the second largest class of animals (after the Insecta)—with 40,000–90,000 living species and at least 13,000 extant and fossil genera (Ponder and Lindberg, 2020)—and are also one of the most evolutionarily successful groups in the variety of ecosystems and habitats that they occupy.
ADW: Gastropoda: INFORMATION
Gastropods are by far the largest group of molluscs. Their 40,000 species comprise over 80% of living molluscs. Gastropod feeding habits are extremely varied, although most species make use of a radula in some aspect of their feeding behavior.
Gastropod - Characteristics, Examples, Anatomy, Fossils ...
2024年9月11日 · Gastropods are members of the class Gastropoda, a highly broad group of mollusks that includes snails and slugs. They have a visceral hump, mantle, muscular foot, eyes, tentacles, and a specialized feeding organ called the radula, composed of many tiny teeth.
The Animal Encyclopedia: Gastropods - ThoughtCo
2018年1月19日 · Gastropods (Gastropoda) are a highly diverse group of mollusks that include between 60,000 and 80,000 living species. Gastropods account for nearly 80 percent of all living mollusks.
Gastropod - Shell Structure, Anatomy, Diversity | Britannica
2024年10月14日 · The gastropod body consists of four main parts: visceral hump, mantle, head, and foot. The body is attached to the shell either by one columellar muscle or by a series of muscles.
Gastropod - Mollusks, Shells, Taxonomy | Britannica
2024年10月14日 · Class Gastropoda (snails and slugs) Snails typically with a calcareous shell, slugs with greatly reduced shell; length ranges from about 1 mm to 130 cm; more than 65,000 species widely distributed in marine, freshwater, and land regions.
Gastropod - New World Encyclopedia
A gastropod is any member of Gastropoda, the largest and most diverse class of the phylum Mollusca, with about 75,000 known living species. Gastropods are also referred to as univalves since most have a single shell, or valve, which is characteristically coiled or spiraled, as in snails, limpets, abalones, cowries, whelks, and conches.