Trilobites of the upper Cambrian Ptychaspid biomere, Wilberns formation, central Texas.
Series: Memoir / Paleontological Society -- 4.; Memoir (Paleontological Society) -- 4.; Journal of paleontology -- v. 44, no. 1, suppl.
Publisher: George Banta Co.]
Published: 1970
Place of publication: [Menasha, Wis
Language: eng
Number of pages: 70
Subjects: Trilobites.; Paleontology -- Texas.; Paleontology -- Cambrian.
Notes: Supplement to the Journal of Paleontology, v. 44, no. 1; Jan. 1970, part II of II.

Bibliography: p. 58-61.