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Authors: |
Johnson, J. G.
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Editors: |
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Date: |
/1986 |
Title: |
Revision of Lower Devonian (Emsian) brachiopod biostratigraphy and biogeography, central Nevada |
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60 , 4 , 825-844 , 17 figs. |
Host: |
Journal of Paleontology : |
Document Type: |
Article\Abst.\Chapter\report |
Annotation: |
Abstract--A diverse, previously unknown fauna with Skenidioides and other small brachiopods, ostracodes, trilobites, and corals has been dated as gronbergi Zone on coexisting conodonts. Conodonts date the Leptocoleina globosa fauna as serotinus Zone. Cymostrophia seca, Strophodonta luxor, and Atrypa kobar are new species. These assignments and new occurrences allow retabulation of most Emsian brachiopod ranges in Nevada. Plotting of provincial, endemic, and cosmopolitan brachiopod genera on a time vs. precent graph shows that the shift through time of Nevada faunas from Eastern Americas Realm to Old World Realm took place gradually during Emsian transgression. Endemic genera were prominent during early phases of Devonian transgrression. |
UserNote |
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MC1
, Schroeder Mountain
, No detailed description given in paper. Collected by S.L. Lee and Anne Pendergast. Stated as being "at or near original collection site" of USGS loc. M1400-SD, which is on northeast side of Maggie Creek in the Tuscarora Mountains, 9 miles (14.5 km) northwest of Carlin, Nevada. This USGS locality (field number 69CM 215) was plotted on the geologic map of Evans and Cress (1972) in SE1/4 sec. 23, T34N, R51E). [crude approx. lat/long: 40° 48.82'N, 116° 12.30'W (NAD83/WGS84) - need to digitize fossil locality on map of Evans and Cress, 1972]
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Eoschuchertella sp. (small)
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indet. leptostrophiid sp.
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indet. stropheodontid sp.
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indet. rhynchotrematid sp.
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Polygnathus aff. P. perbonus (Philip)
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Icriodus nevadensis Johnson and Klapper
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Icriodus trojani Johnson and Klapper
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Pandorinellina exigua exigua (Philip)
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Pandorinellina exigua subsp. indet.
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Koneprusia cf. K. insolita Haas
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Leonaspis sp. 1 Perry & Chatterton
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Acanthopyge (Nitidulopyga) cf. A. nitidula (Barrande)
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Phacops natlensis Perry & Chatterton
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Acravicula? aff. A.? moniellana Becker & Sanchez de Posada, 1977
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Tricornina (Bicornina) sp.
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Tubulibairdia aff. T. simplex (Roth)
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Syringaxon foerstei Merriam
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Aulopora sp. (small celled)
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Aulopora sp. (large celled)
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MC2
, Schroeder Mountain
, No detailed description given in paper. Collected by S.L. Lee and Anne Pendergast. Stated as being "at or near original collection site" of USGS loc. M1400-SD, which is on northeast side of Maggie Creek in the Tuscarora Mountains, 9 miles (14.5 km) northwest of Carlin, Nevada. This USGS locality (field number 69CM 215) was plotted on the geologic map of Evans and Cress (1972) in SE1/4 sec. 23, T34N, R51E). [crude approx. lat/long: 40° 48.82'N, 116° 12.30'W (NAD83/WGS84) - need to digitize fossil locality on map of Evans and Cress, 1972]
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Eoschuchertella sp. (small)
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indet. stropheodontid sp.
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Polygnathus aff. P. perbonus (Philip)
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Icriodus nevadensis Johnson and Klapper
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Pandorinellina exigua subsp. indet.
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Polygnathus gronbergi Klapper & Johnson
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Leonaspis sp. 1 Perry & Chatterton
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Leonaspis sp. 2 Perry & Chatterton
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Acanthopyge (Nitidulopyga) cf. A. nitidula (Barrande)
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Phacops natlensis Perry & Chatterton
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Syringaxon foerstei Merriam
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Aulopora sp. (large celled)
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MC3
, Schroeder Mountain
, No detailed description given in paper. Collected by S.L. Lee and Anne Pendergast. Stated as being "at or near original collection site" of USGS loc. M1400-SD, which is on northeast side of Maggie Creek in the Tuscarora Mountains, 9 miles (14.5 km) northwest of Carlin, Nevada. This USGS locality (field number 69CM 215) was plotted on the geologic map of Evans and Cress (1972) in SE1/4 sec. 23, T34N, R51E). [crude approx. lat/long: 40° 48.82'N, 116° 12.30'W (NAD83/WGS84) - need to digitize fossil locality on map of Evans and Cress, 1972]
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Eoschuchertella sp. (small)
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indet. leptostrophiid sp.
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indet. stropheodontid sp.
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Icriodus nevadensis Johnson and Klapper
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Pandorinellina exigua exigua (Philip)
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Polygnathus gronbergi Klapper & Johnson
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Aulopora sp. (large celled)
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Squameofavosites sp. f of Flory
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MC4
, Schroeder Mountain
, No detailed description given in paper. Collected by S.L. Lee and Anne Pendergast. Stated as being "at or near original collection site" of USGS loc. M1400-SD, which is on northeast side of Maggie Creek in the Tuscarora Mountains, 9 miles (14.5 km) northwest of Carlin, Nevada. This USGS locality (field number 69CM 215) was plotted on the geologic map of Evans and Cress (1972) in SE1/4 sec. 23, T34N, R51E). [crude approx. lat/long: 40° 48.82'N, 116° 12.30'W (NAD83/WGS84) - need to digitize fossil locality on map of Evans and Cress, 1972]
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Eoschuchertella sp. (small)
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Icriodus nevadensis Johnson and Klapper
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Pandorinellina exigua subsp. indet.
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Polygnathus gronbergi Klapper & Johnson
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Pandorinellina sp. indet.
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Phacops cf. P. natlensis Perry & Chatterton
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Syringaxon foerstei Merriam?
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CPN-13a
, Cooper Peak
, Willow Creek area of the northern Roberts Mountains, Bartine Member of the McColley Canyon Formation, Niebuhr's (1973) CPN section, sample 13a, 138 feet above section base (description taken from Johnson, 1986, p. 825, which mentions this locality in passing in reference to the species Cymostrophia seca described therein).
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