Page:Walcott Cambrian Geology and Paleontology II.djvu/111

This page has been proofread, but needs to be validated.

SMITHSONIAN MISCELLANEOUS COLLECTIONS

VOL. 57, NO. 3, PL. 11

MIDDLE CAMBRIAN HOLOTHURIAN

Retrieved from "https://en.wikisource.org/w/index.php?title=Page:Walcott_Cambrian_Geology_and_Paleontology_II.djvu/111&oldid=8778135"