Two silicified carboniferous trilobites from West Texas.
Series: Smithsonian miscellaneous collections,; v. 122, no. 10; Smithsonian miscellaneous collections ;; v. 122, no. 10.
Publisher: Smithsonian Institution
Published: 1954
Place of publication: Washington
Language: eng
Number of pages: 16
Subjects: Trilobites.; Paleontology -- Carboniferous.; Paleontology -- Texas.
Notes: Bibliography: p. 13-14.
Smithsonian Institution. Publication 4146.
At head of title: Charles D. and Mary Vaux Walcott Research Fund.