PTYCHOPARIID TRILOBITES OF THE LOWER-MIDDLE CAMBRIAN BOUNDARY INTERVAL, PIOCHE SHALE, SOUTHEASTERN NEVADA

Twelve ptychopariid species assigned to five genera occur in the Lower-Middle Cambrian boundary interval, Pioche Shale, eastern Nevada. New taxa include one genus, Eokochaspis, and seven species, Eokochaspis nodosa, E. delamarensis, E. metalaspis, E. longspina, Kochina? walcotti, Mexicella antelopea...

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Veröffentlicht in:	Journal of paleontology 2000-07, Vol.74 (4), p.604-630
Hauptverfasser:	Sundberg, Frederick A, McCollum, Linda B
Format:	Artikel
Sprache:	eng
Schlagworte:	Arthropoda biostratigraphy biozones Cambrian Canyons Comets Convexity Crustaceans Eokochaspis Eokochaspis delamarensis Eokochaspis longspina Eokochaspis metalaspis Eokochaspis nodosa Fauna Fossils Frontal lobe Geology Highlands Invertebrata invertebrate Kochina walcotti Limestones Lincoln County Nevada lithostratigraphy Lower Cambrian Mexicella Mexicella antelopea Mexicella robusta Middle Cambrian Nevada new names new taxa Paleontology Paleozoic Paratypes Pioche Shale Ptychopariacea Ptychopariida Ptychopariina Shales southeastern Nevada stratigraphic boundary Stratigraphy Trilobita Trilobitomorpha United States
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