Page:Walcott Cambrian Geology and Paleontology II.djvu/73

This page has been validated.

SMITHSONIAN MISCELLANEOUS COLLECTIONS

VOL. 57, NO. 2, PL. 6

NEOLENUS SERRATUS AND SIDNEYIA INEXPECTANS

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:Walcott_Cambrian_Geology_and_Paleontology_II.djvu/73&oldid=8778390"