A class of molluscs that includes the snails, whelks, limpets, land and sea slugs, and conches. Molluscs have a well-developed head with tentacles, a large flattened foot, and a coiled twisted shell. They occupy marine, freshwater, and terrestrial habitats; in the terrestrial and some freshwater gastropods the mantle cavity acts as a lung instead of enclosing gills.
The class of Mollusca that includes snails and slugs. They have a true head, an unsegmented body, and a broad, flat foot. They appear in the Cambrian and occur in sedimentary rocks of all ages, occupying a range of aquatic and terrestrial environments. The majority of modern gastropods and all the fossil forms possess a coiled shell, which is all that is left to the palaeontologist for determining identification. The classification of living forms is based largely upon soft parts, so that similarly shaped shells developed by unrelated groups cause problems of nomenclature.
Gastropoda
- image potential
- image processing
- image ratio
- image recognition
- image rectification
- image registration
- Imager for Magnetopause-to-Aurora Exploration
- Imager for Magnetopause-to-Aurora Global Exploration
- image scanner
- Image Science Subsystem
- image search
- image segmentation
- image stabilization
- image stitching
- image tearing
- image transfer constant(symbol: θ)
- image tube
- image understanding
- image warping
- imaginal disc
- imaginary axis
- imaginary component
- imaginary number
- imaginary part
- imaginary part of a complex number