Middle Cambrian annelids
By: by Charles D. Walcott.
Series: Smithsonian miscellaneous collections -- v. 57, no. 5.; Cambrian geology and paleontology -- v. 2, no. 5; Smithsonian publication -- 2014; Publication (Smithsonian Institution) -- 2014.
Publisher: Smithsonian Institution
Published: 1911
Place of publication: City of Washington
Language: eng
Number of pages: 144
Subjects: Annelida, Fossil.; Paleontology -- Cambrian.