larval shell
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Mollusc shell — Closed and open shells of a marine bivalve, Petricola pholadiformis. A bivalve shell is composed of two hinged valves which are joined by a ligament … Wikipedia
Gastropod shell — [ 1 umbilicus2 parietal callus3 aperture4 columella5 suture6 whorl7 apex] The gastropod shell is a shell which is part of the body of a gastropod or snail. It is an external skeleton or exoskeleton, which serves not only for muscle attachment,… … Wikipedia
Gastropoda — Gastropod Temporal range: Late Cambrian–Recent[1] … Wikipedia
Oxygyrus keraudrenii — Temporal range: Pliocene Recent[1] Apical view of the shell of Oxygyrus keraudrenii from the Pliocene Epoch … Wikipedia
Protoconch — A protoconch (meaning first or earliest or original shell) is an embryonic or larval shell of some classes of molluscs, e.g., the initial chamber of an ammonite or the larval shell of a gastropod. The protoconch may sometimes consist of several… … Wikipedia
Whorl (mollusc) — A whorl is a single, complete 360° turn in the spiral growth of a mollusc shell. A mollusc shell is basically a long tube, usually coiled in a spiral for strength and compactness. The number of whorls in the shell depend on various factors in the … Wikipedia
Orthonychiidae — Scientific classification Kingdom: Animalia Phylum: Mollusca Class: Gastropoda … Wikipedia
Flabellina goddardi — Systematik Ordnung: Hinterkiemerschnecken (Opisthobranchia) Unterordnung … Deutsch Wikipedia
dissoconch — ˈdisə+ˌ noun Etymology: diss + conch : the larval shell of a bivalve mollusk in the veliger stage … Useful english dictionary
Crustacean larvae — Larval and adult prawns Nauplius larva Adult Penaeus monodon … Wikipedia
