Middle Cambrian holothurians and medusae
By: by Charles D. Walcott.
Series: Smithsonian miscellaneous collections -- v. 57, no. 3; Cambrian geology and paleontology -- v. 2, no. 3; Publication -- 2011; Publication (Smithsonian Institution) -- no. 2011.
Publisher: Smithsonian Institution
Published: 1911
Place of publication: City of Washington
Language: eng
Number of pages: 68
Subjects: Holothurians, Fossil.; Paleontology -- Cambrian.; Jellyfishes, Fossil.