An eurypterid horizon in the Niagara formation of Ontario
By: by M. Y. Williams
Series: Museum bulletin -- no. 20; Geological series -- no. 29; Museum bulletin -- no. 20.; Geological series -- no. 29.
Publisher: Government Printing Bureau
Published: 1915
Place of publication: Ottawa
Language: eng
Number of pages: 21
Subjects: Paleontology; Eurypterida
Notes: At head of title : Canada. Department of Mines.

Includes bibliographical references.