Fortey and Droser 1999, Figure 2 0-5: Rangerian, Nevada
collected by R. A. Fortey, M. L. Droser

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Proetida - Telephinidae
Carolinites sp. Kobayashi 1940
nov
Carolinites angustagena Ross and Barnes 1967
subspecies sibiricus
Opipeuter sp. Fortey 1974
Trilobita - Proetida - Bathyuridae
Madaraspis magnifica Fortey and Droser 1996
Benthamaspis sera Fortey and Droser 1999
Acidiphorus lineotuberculatus Fortey and Droser 1999
"Acidophorus"
Trilobita - Proetida - Dimeropygidae
Ischyrotoma aff. stubblefieldi Ingham 1986
Ischyrotoma stubblefieldi Ingham 1986
    = Ischyrotoma juabensis Adrain et al. 2001
Adrain et al. 2001
Trilobita - Corynexochida - Illaenidae
Harpillaenus rossi Fortey and Droser 1999
Illaenus cf. auriculatus Ross and Barnes 1967
Trilobita - Corynexochida - Styginidae
Raymondaspis vespertina (Ross and Barnes 1967)
Trilobita - Asaphida - Nileidae
Poronileus fistulosus Fortey 1975
Poronileus vallancei Fortey 1975
Nileus hesperaffinis Ross and Barnes 1967
Peraspis erugata Ross 1970
Trilobita - Asaphida - Asaphidae
Protopresbynileus cf. glaber Fortey 1975
Trilobita - Ptychopariida - Shumardiidae
Shumardia exopthalmus Ross and Barnes 1967
"exopthamlus"
Trilobita - Trinucleida - Raphiophoridae
Ampyxoides cf. occipitalis Dean 1973
Trilobita - Phacopida - Encrinuridae
Cybelurus halo Fortey 1980
Trilobita - Phacopida - Pliomeridae
Ectenonotus whittingtoni Ross and Barnes 1967
Pseudomera arachnopyge Fortey and Droser 1996
Trilobita - Phacopida - Calymenidae
Protocalymene sp. Ross and Barnes 1967
nov.
Trilobita - Lichida - Lichidae
Apatolichas cf. jukesi (Billings 1865)
Trilobita - Olenida - Olenidae
Bienvillia papulosa (Fortey 1974)
Cloacaspis tesselata Fortey and Droser 1999
see common names

Geography
Country:United States State/province:Nevada County:Nye
Coordinates: 36.9° North, 116.7° West (view map)
Paleocoordinates:6.0° South, 83.9° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Ordovician Epoch: Early Ordovician
Stage: Floian 10 m.y. bin: Ordovician 2
Key time interval: Rangerian Brachiopod zone:  L
Age range of interval: 470 - 469.1 m.y. ago
Stratigraphy
Geological group:Pogonip Formation:Antelope Valley
Regional section:Meikeljohn Peak Regional bed:0 to 5 ft
Regional order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Whiterockian; Rangerian
Lithology and environment
Primary lithology: lithified "limestone"
Lithology description: algal; associated encrinites
Environment:shallow subtidal indet. Tectonic setting:passive margin
Geology comments: carbonate platform
Taphonomy
Modes of preservation:body,original calcite
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:biostratigraphic analysis
Collectors:R. A. Fortey, M. L. Droser
Taxonomic list comments:Brachiopods common throughout
Metadata
Also known as:SF 28
Database number:104653
Authorizer:S. Finnegan, M. Hopkins Enterer:S. Finnegan, M. Hopkins
Modifier:J. Marcot Research group:marine invertebrate
Created:2011-02-07 12:04:21 Last modified:2023-09-05 14:51:22
Access level:the public Released:2011-02-07 12:04:21
Creative Commons license:CC BY
Reference information

Primary reference:
25415. R. A. Fortey and M. L. Droser. 1999. Trilobites from the Base of the Type Whiterockian (Middle Ordovician) in Nevada. Journal of Paleontology 73(2):182-201 [S. Finnegan/S. Finnegan/J. Alroy]

Secondary references:

35065 J. M. Adrain, S. R. Westrop, E. Landing and R. A. Fortey. 2001. Systematics of the Ordovician trilobites Ischyrotoma and Dimeropygiella, with species from the Type Ibexian area, western U.S.A. Journal of Paleontology 75(5):947-971 [M. Hopkins/M. Hopkins]