pectinoid
Look at other dictionaries:
umbonal angle — (MOLLUSCA: Bivalvia) In pectinoid shells, the angle of divergence of the umbonal folds; in other shells the divergence of the posterodorsal and anterodorsal parts of the longitudinal profile … Dictionary of invertebrate zoology
umbonal fold — (MOLLUSCA: Bivalvia) In pectinoid shells, a ridge originating at the umbo and setting the auricle off from the shell body … Dictionary of invertebrate zoology
pectin- — combining form or pectini Etymology: New Latin pectin , pecten pecten : comb : pecten pectinoid pectiniform … Useful english dictionary
