Some Chazyan sponges
By: by Percy E. Raymond and Vladimir J. Okulitch.
Contributors: Okulitch, Vladimir Joseph, 1906-; Harvard University. Museum of Comparative Zoology.
Series: Bulletin of the Museum of Comparative Zoology -- v. 86, no. 5
Publisher: Harvard University, Museum of Comparative Zoology
Published: 1940
Place of publication: Cambridge, Mass
Language: eng
Number of pages: 214
Subjects: Sponges, Fossil.; Paleontology -- Ordovician.