beatricea-like organism from the Middle Ordovician
By: by Percy E. Raymond.
Series: Museum bulletin -- no. 5; Geological series -- no. 21; Museum bulletin (Ottawa, Ont.) -- no. 5.; Geological series (Geological Survey of Canada) -- no. 21.
Publisher: Government Printing Bureau
Published: 1914
Place of publication: Ottawa
Language: eng
Number of pages: 19
Subjects: Paleontology -- Ordovician.; Paleontology -- Canada.
Notes: Cover title.

Includes bibliographical references.

Issued also on microfiche.