USNM 10807. 3 miles N & W of Roberts Creek Ranch, Roberts Mountains: Eifelian, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tentaculita - Styliolinidae
Styliolina sp. Karpinsky 1884
Rostroconchia - Conocardiida
6 specimens
    = Conocardioidea sp. Miller 1889
Wagner 2023
Bivalvia - Solemyida - Ctenodontidae
244 specimens
Bivalvia - Nuculida - Nuculidae
Nuculoidea sp. Williams and Berger 1916
206 specimens
Bivalvia - Nuculanida - Malletiidae
2 specimens
Bivalvia - Modiomorphida - Cypricardiniidae
22 specimens
Bivalvia - Pholadomyida - Edmondiidae
1 specimen
Bivalvia - Lucinida - Paracyclidae
Paracyclas sp. Hall 1843
5 specimens
Bivalvia - Lucinida - Lucinidae
5 specimens
Bivalvia - Myalinida - Ambonychiidae
7 specimens
Bivalvia - Ostreida - Pterineidae
3 specimens
Bivalvia - Arcida - Parallelodontidae
Grammatodon sp. Meek and Hayden 1860
2 specimens
Gastropoda - Murchisoniina - Murchisoniidae
Blodgett and Johnson 1992 10 specimens
type locality
Gastropoda - Murchisoniina - Hormotomidae
Blodgett and Johnson 1992 1 specimen
type locality
Gastropoda - Murchisoniina - Loxonematidae
Blodgett and Johnson 1992 416 specimens
type locality
Gastropoda - Murchisoniina - Soleniscidae
Blodgett and Johnson 1992 5 specimens
Wagner 2023
Blodgett and Johnson 1992 3 specimens
Wagner 2023
Blodgett and Johnson 1992 8 specimens
Wagner 2023
Gastropoda - Murchisoniina - Gosseletinidae
Blodgett and Johnson 1992 1 specimen
Blodgett and Johnson 1992 1 specimen
Blodgett and Johnson 1992 82 specimens
Gastropoda - Murchisoniina - Eotomariidae
Blodgett and Johnson 1992 60 specimens
type locality
Gastropoda - Murchisoniina - Porcelliidae
Blodgett and Johnson 1992 1 specimen
Blodgett and Johnson 1992 1 specimen
Blodgett and Johnson 1992 3 specimens
Blodgett and Johnson 1992 36 specimens
Gastropoda - Bellerophontida - Bellerophontidae
Blodgett and Johnson 1992 132 specimens
Gastropoda - Bellerophontida - Pterothecidae
Blodgett and Johnson 1992 315 specimens
Gastropoda - Euomphalina - Euomphalidae
Blodgett and Johnson 1992 2 specimens
Blodgett and Johnson 1992 64 specimens
Gastropoda - Euomphalina - Holopeidae
Blodgett and Johnson 1992 1 specimen
Wagner 2023
Gastropoda - Naticopsidae
Blodgett and Johnson 1992 3 specimens
Cephalopoda - Ammonitida - Werneroceratidae
Cephalopoda - Ammonitida - Agoniatitidae
Agoniatites sp. Meek 1877
Strophomenata - Orthotetida - Schuchertellidae
6 specimens
Strophomenata - Productida - Productellidae
14 specimens
Strophomenata - Strophomenida - Strophodontidae
234 specimens
Strophomenata - Strophomenida - Chonetidae
3 specimens
Rhynchonellata - Athyridida - Meristellidae
? Meristina sp. Hall 1867
7 specimens
Rhynchonellata - Athyridida - Athyrididae
232 specimens
Rhynchonellata - Athyridida - Nucleospiridae
Nucleospira sp. Hall 1859
4 specimens
Rhynchonellata - Terebratulida - Stringocephalidae
1 specimen
Rhynchonellata - Spiriferida - Ambocoeliidae
64 specimens
21 specimens
Rhynchonellata - Spiriferida - Xenomartiniidae
Quadrithyris cf. vijaicus (Khodalevich 1951)
1 specimen
Rhynchonellata - Spiriferida - Reticulariidae
Warrenella kirki (Merriam 1940)
121 specimens
W. kirki praekirki
Rhynchonellata - Orthida - Draboviidae
12 specimens
Rhynchonellata - Orthida - Schizophoriidae
124 specimens
see common names

Geography
Country:United States State/province:Nevada County:Eureka
Coordinates: 40.0° North, 116.3° West (view map)
Paleocoordinates:21.7° South, 77.3° West (Wright 2013)
Basis of coordinate:based on political unit
Altitude:8640 feet
Geographic resolution:outcrop
Time
Period: Devonian Epoch: Middle Devonian
Stage: Eifelian 10 m.y. bin: Devonian 3
*Period:Middle Devonian *Epoch:Early/Lower Middle Devonian
*International age/stage:Early/Lower Eifelian - Early/Lower Eifelian
Key time interval: Eifelian Conodont zone:  Tortodus kockelianus
Age range of interval: 393.47 - 387.95 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Nevada Formation:Denay Limestone
Local section:Roberts Mountain Local bed:17L
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: Faunal Interval: 17L.
Lithology and environment
Primary lithology: packstone
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils,some microfossils
Collection methods:bulk,chemical,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Taxonomic list comments:Generic taxonomy updated by me. Bivalves from Johnson (1971) identified by A. L. McAlester.
Metadata
Also known as:W-28-5
Database number:3830
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:1999-08-10 17:08:06 Last modified:2025-02-22 15:12:02
Access level:the public Released:1999-08-10 17:08:06
Creative Commons license:CC0
Reference information

Primary reference:
11582. J. G. Johnson. 1971. Lower Givetian brachiopods from Central Nevada. Journal of Paleontology 45(2):301-326 [P. Wagner/P. Wagner/P. Wagner]

Secondary references:

255 R. B. Blodgett and J. G. Johnson. 1992. Early Middle Devonian (Eifelian) Gastropods of Central Nevada. Palaeontographica Abteilung A 222:85-139 [P. Wagner/P. Wagner/P. Wagner]
9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]