growth lines
(MOLLUSCA: Gastropoda)
Surface marking of the shell, denoting a former position of the outer lip.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • upcurved growth lines — Upwardly bent growth lines covering tear in conchostracan shell margin at site of injury [Moore and McCormick, 1969]. Upwardly bent growth lines covering tear in shell margin at site of injury [McLaughlin, 1980] …   Crustacea glossary

  • growth rugae — (MOLLUSCA) Irregular ridges or undulations on the shell surface determined by former positions of the outer lip which show slowed or stopped growth; see growth lines …   Dictionary of invertebrate zoology

  • growth squamae — (MOLLUSCA: Bivalvia) Scaly extensions of the shell surface parallel to the growth lines …   Dictionary of invertebrate zoology

  • growth welt — (MOLLUSCA: Bivalvia) An elongate shell elevation parallel to the growth lines …   Dictionary of invertebrate zoology

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  • growth line — (Order Diplostraca): One in a series of concentric lines on outer surface of each side (valve) of carapace; each growth line marks a successive molt. Number of lines is of taxonomic importance. (distinct, indistinct; widely spaced, crowded)… …   Crustacea glossary

  • Growth of the Old Swiss Confederacy — History of Switzerland This article is part of a series Early history …   Wikipedia

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