chilidium
English edit
Noun edit
chilidium (plural chilidia)
- (zoology) A plate covering a portion of the dorsal valve in certain brachiopods.
- 1895, Charles Schuchert, A Synopsis of American Fossil Brachiopoda Including Bibliography and Synonymy:
- The chilidium is a convex plate often covering the cardinal process of the dorsal valve in the Protremata.
- 1938, Edward Oscar Ulrich, Ozarkian and Canadian Brachiopoda, page 73:
- The chilidium is not often visible in the dorsal valve of Billingsella but when seen proves to be an arch with its piers built against the notothyrial edge.