Athyrididina

Athyrididina

[‚ath·ə·rə′də′dī·nə]
(paleontology)
A suborder of fossil articulate brachiopods in the order Spiriferida characterized by laterally or, more rarely, ventrally directed spires.
References in periodicals archive ?
Suborder Athyrididina Boucot, Johnson&Staton,1964