Palmer, A. R. (1965). Trilobites of the late Cambrian Pterocephaliid biomere in the Great Basin, United States: The content, concept, and international zonation of a trilobite biomere in the Great Basin of Western United States are defined; 112 species representing 51 genera of ptychoparioid trilobites are described and illustrated. U.S. Government Print. Office.
Chicago-Zitierstil (17. Ausg.)Palmer, Allison R. Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States: The Content, Concept, and International Zonation of a Trilobite Biomere in the Great Basin of Western United States Are Defined; 112 Species Representing 51 Genera of Ptychoparioid Trilobites Are Described and Illustrated. Washington, DC: U.S. Government Print. Office, 1965.
MLA-Zitierstil (9. Ausg.)Palmer, Allison R. Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States: The Content, Concept, and International Zonation of a Trilobite Biomere in the Great Basin of Western United States Are Defined; 112 Species Representing 51 Genera of Ptychoparioid Trilobites Are Described and Illustrated. U.S. Government Print. Office, 1965.