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The Terebridae, commonly referred to as auger shells or auger snails, is a family of predatory marine gastropods in the superfamily Conoidea. [3] They have extremely high-spired shells with numerous whorls; their common name refers to the resemblance of their shells to rock-drill bits. More than 400 species are recently known worldwide. [2] [4]
Ladislavella utahensis, common name the thickshell pondsnail, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc in the family Lymnaeidae, the pond snails. This species is endemic to Utah Lake in the United States. The last living snails were found in the early 1930s.
The Registry of World Record Size Shells is a conchological work listing the largest (and in some cases smallest) verified shell specimens of various marine molluscan taxa.A successor to the earlier World Size Records of Robert J. L. Wagner and R. Tucker Abbott, it has been published on a semi-regular basis since 1997, changing ownership and publisher a number of times.
Lymnaea stagnalis, better known as the great pond snail, is a species of large air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae. The great pond snail is a model organism to study parasitology, neurology, embryonal development and genetic regulation.
A colored drawing of a shell of Titanostrombus galeatus from Kiener, 1843. The shell of Titanostrombus galeatus is large (maximum size 23 cm (8.97 inches), common to 14 cm (5.46 inches)), [4] very thick and heavy. It has an oblong outline, with a short pointed spire that lacks spines and nodules and is often eroded.
The length of the shell varies between 50 mm and 410 mm. It is the largest of all helmet shells. It has a very solid, heavy, rotund shell with large, horn-like knobs and a wide, flat base. The shell has a dorsally pale orange colour, its base vivid orange, faintly marked with white and brown. [1]
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