cyrtochoanite

plural cyrtochoanites

1. A cyrtochoanitic organism.

   The writer agrees with Teichert that Lambeoceras is a cyrtochoanite rather than an orthochoanite as suggested by Troedsson.

   1939, Geological Society of America, Bulletin of the Geological Society of America

   2 more examples

   […] is inclined to regard it as a cyrtochoanite and points out that its narrow siphuncle indicates that it is not a holochoanite. With the exception of this single minute form, which is imperfectly known, even questionable[…]

   1931 10, Studies in Natural History

   Although it is probable that this form is an orthochoanite and the segments of its siphuncle are cylindrical, it may be a cyrtochoanite with fusiform or even globular siphuncular segments. Until the nature of its siphuncle is[…]

   1937, Alvin Leonard Lugn, Arthur K. Miller, George Evert Condra, Gerald John Loetterle, Merlin Edward Upson, John Thomas Link, Eugene Clifton Reed, Nebraska Geological Survey, Oliver Joseph Scherer, Correlation of the Members of the Shawnee Group in Southeastern Nebraska and Adjacent Areas of Iowa, Missouri and Kansas: 1933-1947