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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 |
| MULTISERIATE RADULA | A RADULA which has a RACHIDIAN TOOTH and LATERAL TEETH and MARGINAL TEETH; see also: UNISERIATE RADULA. | |
| RADULA (pl. RADULAE) |
A ribbon which supports rows of chitinous teeth; this characteristic is found only in molluscs; see also:
ASCUS SAC;
CUSPIDOBLAST;
ODONTOPHORE;
RADULA FORMULA;
UNISERIATE. Mikkelsen, P.S. 1985. A rapid method for slide mounting of minute radulae, with a bibliography of radula mounting techniques. Nautilus 99(2-3):62-65. [request a reprint! or download a copy] |
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| RADULA FORMULA |
A series of numbers indicating the number of MARGINAL TEETH, LATERAL TEETH and the RACHIDIAN TOOTH, and (again) the lateral teeth and marginals. Example: a formula of 3+6+R+6+3 indicates 3 marginal teeth, 6 lateral teeth and 1 rachidian (R) tooth. The radula formula may be simply "1" if the radula is UNISERIATE, having only rachidian teeth. See also: DOCOGLOSSATE; STENOGLOSSATE; RHIPIDOOGLOSSATE; TAENIOGLOSSATE; TOXOGLOSSATE. See the excellent illustrations on Wikipedia. |
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| RADULA RIBBON | The flexible structure in which the radular teeth are embedded; see also: RADULA. | |
| UNISERIATE RADULA | A RADULA which only has a RACHIDIAN TOOTH (as in ASCOGLOSSANS), lacking LATERAL TEETH and MARGINAL TEETH; see also: RADULA FORMULA; MULTISERIATE RADULA; TOXOGLOSSATE. | |
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