An appraisal of the Great Basin Middle Cambrian trilobites described before 1900 Palmer, Allison R. creator author. Geological Survey (U.S.) issuing body. text bibliography dcu 1954 monographic eng remote 1 online resource (36 unnumbered pages, 5 unnumbered pages of plates) : map. by Allison R. Palmer. Title from title screen (viewed September 26, 2014). "Of the 29 species described prior to 1900, 27 are redescribed and 29 refigured, and a new name is proposed for I species." Includes bibliographical references (pages 82-83) and index. n-usp-- Paleontology Cambrian Paleontology Great Basin Trilobites Great Basin Trilobites Nevada Trilobites Utah Cambrian Geologic Period Paleontology Trilobites Nevada United States Great Basin Utah From 500 to 570 million years ago fast I 19.16:264-D I 19.16:264-D Appraisal of the Great Basin Middle Cambrian trilobites described before 1900 Palmer, Allison R. (DLC) 75605595 (OCoLC)64076 Geological Survey professional paper ; 264-D Shorter contributions to general geology https://purl.fdlp.gov/GPO/gpo86049 COP 140929 20211120182617.0 in00003902938 eng