"Discina" Quotes from Famous Books
 ... were adduced. Let it be borne in mind that Avicula, Mytilus, Chiton, Natica, Patella, Trochus, Discina, Orbicula, Lingula, Rhynchonclla, and Nautilus, all of which are existing genera, are given without a doubt as Silurian in the last edition of "Siluria"; while the highest forms of the highest Cephalopods are represented in the Lias by a genus ...
— Discourses - Biological and Geological Essays • Thomas H. Huxley |
