Silicified Middle Ordovician trilobites
By: by H. B. Whittington and W. R. Evitt, II.
Contributors: Evitt, William R., joint author.
Series: Geological Society of America. Memoir; 59; Memoir (Geological Society of America) ;; 59.
Publisher: Geological Society of America
Published: 1953
Place of publication: [New York]
Language: eng
Number of pages: 137
Subjects: Trilobites.; Paleontology -- Ordovician.
Notes: Bibliography: p. 97-100.