On a new genus of siliceous sponges from the Trenton formation at Ottawa
By: by George Jennings Hinde.
Series: CIHM/ICMH Microfiche series -- no. 24944
Publisher: s.n.
Published: 1981
Place of publication: [S.l
Language: eng
Format: Microform
Subjects: Sponges, Fossil
Other titles: Canadian record of science.
Notes: Caption title.

"Reprinted from the Canadian Record of Science, July 1889."

Filmed from a copy of the original publication held by the Library, Geological Survey of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1981.