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The classification, as specified by Kabat and Hershler (1993), [3] does not form a monophyletic group, and was in need of revision. A study by Wilke et al. (2001) [ 5 ] using molecular data from COI ( Cytochrome c oxidase subunit I ) and 18S genes has resulted in a new tentative set of subfamilies: Hydrobiinae, Pseudamnicolinae, Nymphophilinae ...
Snails will begin reproducing at a size as small as 5 millimetres (1 ⁄ 4 in) [30] or 10 millimetres (3 ⁄ 8 in) in length and broods may contain over seventy offspring (iteroparity). [5] The size of the shell of the parent at peak release of juveniles is 20.0 millimetres ( 3 ⁄ 4 in). [ 30 ]
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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]
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin . [ 3 ]
Succinea, common name the amber snails, is a large genus of small, air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Succineidae. [ 2 ] The common name refers to the fact that live snails in this genus are translucent and similar to amber in appearance.
The 1.4-2.1 x 3-4 mm. shell is variable. It has 4-5 whorls and the last whorl width seen from above 1.5-2 x of penultimate whorl. The umbilicus is narrow, much narrower than in Vitrea botterii , but clearly open, showing penultimate whorl, initially narrower, widened only at last whorl.
Omphiscola glabra, commonly known as the pond mud snail, [3] is a species of small to medium-size, air-breathing, freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae. [4] Omphiscola glabra is the type species of the genus Omphiscola. [5]