The Morphology and Function of the Frontal Ambulacrum of Moira Atropos (Echinoidea: Spatangoida)
Abstract:The functional anatomy of the sunken, frontal ambulacrum of the burrowing sea-urchin, Moira atropos (Lamark), is presented. Several features are described for the first time, including:
a) Division of labor in the fasciolar clavules;
b) Special clavule-like spines for which a new term, “cordyles,” is proposed;
c) Ramified plates on the actinostome for the cleaning of the oral tube feet, for which the term “oral rakers” is proposed;
d) A mucus rope used as a feeding mechanism.
Document Type: Research Article
Publication date: January 1, 1963
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