An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms
|by Paul S. Mikkelsen|
|APERTURAL LIP||The most recently formed margin of the aperture; = PERISTOME; see also: HOLOSTOMATE; SIPHONOSTOMATE; see also: INNER APERTURAL LIP; OUTER APERTURAL LIP.|
|APERTURAL LIP, INNER||[need definition]. See illustration: Composite Gastropod. See also: APERTURAL LIP; OUTER APERTURAL LIP|
|APERTURAL LIP, OUTER||[need definition]. See illustration: Composite Gastropod. See also: APERTURAL LIP; INNER APERTURAL LIP.|
|COLUMELLAR LIP||The part of the inner lip, of a gastropod shell, nearest to the axis of coiling, and comprising the visible part of the COLUMELLA.|
Like an ellipse or flattend oval; see also: ELONGATE ELLIPTICAL.
See other bivalve shapes
A basically ELLIPTICAL shape that has been elongated; like a flattened oval.
See other bivalve shapes.
|LIP||The margin of the aperture; the inner lip (= LABIUM) extends from the foot of the columella to the suture and consists of the columellar lip and the parietal lip. The outer lip (= LABRUM) is that part of the aperture farthest from the axis of coiling; see also: PALATAL; PERISTOME.|
|LIP, COLUMELLAR||The lower portion of the INNER APERTURAL LIP; see also: LIP, PARIETAL.|
|LIP, FLARED||[need definition]. In the Strombidae…|
|LIP, INNER||The portion of the apertural margin of a gastropod shell opposite the outer lip and abutting the earliest portion of the body whorl; = LABIUM; the combination of the COLUMELLAR LIP and the PARIETAL LIP.|
|LIP, OUTER||The outer, distal, growing or leading edge of a gastropod shell; = LABRUM; = PERISTOME. See illustration: Composite Gastropod. See also: OUTER APERTURAL LIP; PALATAL.|
|LIP, PARIETAL||The upper portion of the inner APERTURAL LIP, which is attached to the subsequent WHORL.|
|LIP, REFLECTED||[need definition].|
|OUTER LIP||[need definition].|
|OUTER LIP TOOTH||[need definition]. See: LABIAL TOOTH. See illustration: Composite Gastropod.|
|SLIPPER SHELL||Gastropods of the genus Crepidula where the underside of the shell has the appearance of a slipper. See also: DECK; DIAPHRAGM.|
|SLIPPER-SHAPED||Resembling a person's slipper, e.g., when viewing an upside-down shell of the genus Crepidula, with the DECK of the shell forming the upper part of the slipper. See other gastropod shapes.|
|SUBELLIPTICAL||[need definition]. See other bivalve shapes.|
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