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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
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| Term | Definition |
| LIRA (pl. LIRAE) |
Fine linear elevation on shell surface or within OUTER LIP (Cox, 1960); this feature is often on the inner surface of the outer lip of the APERTURE; see also: STRIA. | |
| LIRATE | Sculptured with spirally oriented RIDGES, as in the APERTURE of a shell; see also: STRIATE; VERMICULATION. | |
| LIRATION | A fine, threadlike spiral sculptural element; see also: LIRA. | |
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