Found 1 items, similar to Orthis.
English → English (gcide) Definition: Orthis Orthis \Or"this\ ([^o]r"th[i^]s), prop. n. [NL., fr. Gr. 'orqo`s straight.] (Zo["o]l.) An extinct genus of Brachiopoda, abundant in the Paleozoic rocks. [1913 Webster]