parathyridium
From ZooTerms (Dictionary of Invertebrate Zoology)
Revision as of 23:41, 13 September 2013 by Andreas Plank (Talk | contribs) (1 revision: import_noun-simple)
parathyridium (noun; plural -dia; Greek para, beside; diminutive thyris, window): (Brachiopoda) Deep indentation of both valves on either side of the beak; most pronounced in the dorsal valve.
