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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
| Term | Definition |
| RIBLET, SECONDARY | On shell with riblets of different orders of strength, the riblet that appears somewhat later in ONTOGENY than primary riblets and remains weaker than these; see also: RIBLET, PRIMARY. | |
| SECONDARY | Less than primary in strength; second order; see also: PRIMARY; TERTIARY; QUATERNARY. | |
| SECONDARY HOMONYM | A homonym that results from one SPECIES being placed into a GENUS where the species name is in use for a different species. The older of the two names is the senior secondary homonym. See also: HOMONYM; PRIMARY HOMONYM; HOMONYMY. | |
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