Rotalia (rotalia)

[NL. (Lamarck, 1809), neut. pl. of LL. rotal is, having wheels: see ro tal.] The typical genus of Rotaliidæ, formerly used with great latitude, now much restricted. Rotalia. On the right, with extended filamentous pseudopodia; on the left, more enlarged section of the chambered shell. The shells or tests of these foraminifers are extremely minute, and of a rotate, turbinate, or nautiloid figure. They abound from the Chalk onward. rotalian (rō-ta'li-an), a. and n. [ In the Rotalian series the chambers are disposed in a turbinoid spire. W. B. Carpenter, Micros., § 483. II. n. A member of the genus Rotalia in a broad sense. Rotal idea (rō-ta-lid'ē-ä), n. pl. [NL., rotal i dean (rō-ta-lid'e-an), a. and n. [ rotal i form (rō-tal'i-fôrm), a. [