TRILOBITES OF THE LOWER MIDDLE CAMBRIAN POLIELLA DENTICULATA BIOZONE (NEW) OF SOUTHEASTERN NEVADA

Two new genera, Poliellaites and Piochella, and six new species, Eokochaspis? cabinensis, Nyella? plana, Poliellaites gloriosa, Piochella peasleensis, Poliella ovala, and Stephenaspis highlandensis, are described from the Susan Duster Limestone and Log Cabin members, Pioche Shale. Kochaspis Resser,...

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Veröffentlicht in:Journal of paleontology 2003-03, Vol.77 (2), p.331-359
Hauptverfasser: SUNDBERG, FREDERICK A, McCOLLUM, LINDA B
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description Two new genera, Poliellaites and Piochella, and six new species, Eokochaspis? cabinensis, Nyella? plana, Poliellaites gloriosa, Piochella peasleensis, Poliella ovala, and Stephenaspis highlandensis, are described from the Susan Duster Limestone and Log Cabin members, Pioche Shale. Kochaspis Resser, 1935, and Kochaspis liliana (Walcott, 1886) are redescribed based on new material. In addition, several species from the Pioche Shale, that are not addressed in our previous reports are discussed in relationship to existing species and local occurrence. The trilobite diversity of the Poliella denticulata Biozone (new) within the study area is 17 genera and 35 species, occurring in five faunal assemblages.
doi_str_mv 10.1666/0022-3360(2003)077<0331:TOTLMC>2.0.CO;2
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source BioOne Complete; JSTOR Archive Collection A-Z Listing
subjects Aquatic life
assemblages
biodiversity
biometry
biostratigraphy
biozones
Cambrian
Comets
Convexity
Fauna
faunal list
Fieldaspis
Fossils
Frontal lobe
Geology
Highlands
invertebrate
Kochaspis
Limestone
Limestones
Lincoln County Nevada
Log Cabin Member
Log cabins
Middle Cambrian
morphology
Nevada
new taxa
Nyella
Paleontology
Paleozoic
Paratypes
Pioche Shale
Piochella
Poliella
Poliella denticulata
Poliellaites
Shales
southeastern Nevada
Stephenaspis
Susan Duster Limestone
taxonomy
type specimens
United States
title TRILOBITES OF THE LOWER MIDDLE CAMBRIAN POLIELLA DENTICULATA BIOZONE (NEW) OF SOUTHEASTERN NEVADA
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