gastropods's Usage Examples:

He fully recognized, however, the similarity of Pteropods to Gastropods in their general asymmetry and in the torsion of the visceral mass in Limacinidae.

These facts afford strong support to the hypothesis that the weight of the shell is the original cause of the torsion of the dorsal visceral mass in Gastropods.

Spengel showed that the parabranchia of Gastropods is the typical olfactory organ or osphradium in a highly developed condition.

The introverted rostrum of the Pectinibranch Gastropods presents in contrast to these a limited range of FIG.

Supposing the tube to be completely introverted and to commence its eversion, we then find that eversion may take place, either by a forward movement of the side of the tube near its attached base, as in the proboscis of the Nemertine worms, the pharynx of Chaetopods and the eye-tentacle of Gastropods, or by a forward movement of the inverted apex of the tube, as in the proboscis of the Rhabdocoel Planarians, and in that of Gastropods here under consideration.

Forms adapted to terrestrial life and to aerial respiration occur in various divisions of Gastropods, and do not constitute a single homogeneous group. Thus the Helicinidae, which are terrestrial, are now placed among the Aspidobranchia.

Triforis, Physa, Clausilia are examples of sinistral Gastropods, but reversal also occurs as an individual variation among forms normally dextral.

In the most primitive existing Gastropods the gonad opens into the right kidney (Patellidae, Trochidae, Fissurellidae).

In dextral Gastropods the only structure found on the topographically right side of the rectum is the genital duct.

- These are the most primitive Gastropods, retaining to a great degree the original symmetry of the FIG.

Synonyms:

Ancylus fluviatilis, cowry, Gastropoda, Gasteropoda, abalone, freshwater limpet, conch, cowrie, shellfish, snail, bubble shell, ear-shell, sea hare, slug, aplacophoran, river limpet, mollusc, mollusk, seasnail, physa, nudibranch, solenogaster, sea slug, univalve, Aplysia punctata, class Gasteropoda, class Gastropoda,

Antonyms:

spread, work, bivalve,