Divide between Troy Canyon and South Fork of American Canyon: Illyrian, Nevada
collected by J.P. Smith

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Ostreida - Halobiidae
Daonella moussoni (Merian 1853)
Smith 1914
Ranges from meeki-occidentalis zones
Bivalvia - Ostreida - Pteriidae
Rhynchopterus obesus Gabb 1864
Smith 1914
Cephalopoda - Aulacoceratida - Xiphoteuthididae
Atractites burckhardti n. sp. Smith 1914
Smith 1914
synonym of Calliconites nevadensis
Ranges from meeki-occidentalis zones
Atractites boeckhi (Stuerzenbaum 1876)
Smith 1914
    = Atractites sp. Guembel 1861
Silberling and Nichols 1982
Species based on phragmocone and Smith's identification is "meaningless"
Atractites nevadensis (Meek 1877)
Smith 1914
    = Atractites sp. Guembel 1861
Silberling and Nichols 1982
Not A. nevadensis, but not identified further
Atractites elegans n. sp. Smith 1914
Smith 1914
Cephalopoda - Pseudorthocerida - Trematoceratidae
Orthoceras campanile Mojsisovics 1869
Smith 1914
synonym of Trematoceras elegans
Cephalopoda - Nautilida - Liroceratidae
Paranautilus multicameratus (Gabb 1864)
Smith 1914
(1 measurement)
    = Paranautilus smithi n. sp. Kummel 1953
Kummel 1953
Cephalopoda - Nautilida - Tainoceratidae
Germanonautilus furlongi n. sp. Smith 1914
Smith 1914
(1 measurement)
Cephalopoda - Nautilida - Grypoceratidae
Grypoceras whitneyi (Gabb 1864)
Smith 1914
Cephalopoda - Phylloceratida - Ussuritidae
Monophyllites billingsianus (Gabb 1864)
Smith 1914
    = Monophyllites cf. sphaerophyllus Hauer 1851
Silberling and Nichols 1982
Cephalopoda - Ceratitida - Sageceratidae
Sageceras gabbi Mojsisovics 1873
    = Sageceras cf. walteri Mojsisovics 1882
Bucher 1989
Ranges from rotelliformis-meeki zones
Cephalopoda - Ceratitida - Longobarditidae
Longobardites cf. zsigmondyi (Bockh 1874)
Silberling and Nichols 1982
Specimens of L. nevadanus in pls 58 and 75 (in part); and pls 8,12, 30 (in part) of Smith, 1914
Dalmatites parvus n. sp. Smith 1914
Smith 1914
recombined as Longobardites parvus
Ranges from rotelliformis-meeki zones
Longobardites nevadanus Hyatt and Smith 1905
    = Longobardites parvus Smith 1914
Silberling and Nichols 1982
Specimens in pls 58 and 75 (in part); and pls 8,12, 30 (in part) of Smith, 1914
Dalmatites minutus n. sp. Smith 1914
Smith 1914
synonym of Longobardites parvus
Ranges from rotelliformis-meeki zones (1 measurement)
Cephalopoda - Ceratitida - Trachyceratidae
Trachyceras (Anolcites) drakei n. sp. Smith 1914
Smith 1914
Trachyceras (Anolcites) barberi n. sp. Smith 1914
Smith 1914
Cephalopoda - Ceratitida - Arcestidae
Arcestes (Proarcestes) quadrilabiatus
Smith 1914
Ranges from rotelliformis-lower meeki zones
    = Proarcestes cf. balfouri Oppel 1863
Silberling and Nichols 1982
Arcestes (Proarcestes) hartzelli n. sp. Smith 1914
Smith 1914
synonym of Proarcestes balfouri
Ranges from rotelliformis-lower meeki zones
Cephalopoda - Ceratitida - Acrochordiceratidae
Haydenites hatschekii Diener 1907
Smith 1914
    = Acrochordiceras hyatti Meek 1877
Silberling and Nichols 1982
Cephalopoda - Ceratitida - Ceratitidae
"Ceratites" weaveri Smith 1914
Smith 1914
Eutomoceras laubei Meek 1877
Ranges from meeki-lower occidentalis zone
Ceratites (Paraceratites) gabbi (Meek 1877)
Smith 1914
original and current combination Eudiscoceras gabbi
Acrochordiceras foltzense n. sp. Smith 1914
Smith 1914
nomen dubium belonging to Gymnotoceras
Cephalopoda - Ceratitida - Gymnitidae
Gymnites perplanus (Meek 1877)
Smith 1914
Cephalopoda - Ceratitida - Ptychitidae
Ptychites evansi n. sp. Smith 1914
Smith 1914
Ranges from rotelliformis-meeki zones (1 measurement)
see common names

Geography
Country:United States State/province:Nevada
Coordinates: 40.3° North, 118.1° West (view map)
Paleocoordinates:11.2° North, 42.3° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Triassic Epoch:Middle Triassic
Stage:Anisian 10 m.y. bin:Triassic 2
Key time interval:Illyrian
Age range of interval:243.80000 - 242.00000 m.y. ago
Stratigraphy
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified silty "limestone"
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:J.P. Smith
Metadata
Also known as:Fossil Hill
Database number:33225
Authorizer:D. Bottjer, M. Clapham Enterer:C. Powers, M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2003-07-24 10:58:04 Last modified:2013-04-15 02:25:07
Access level:the public Released:2003-07-24 10:58:04
Creative Commons license:CC BY
Reference information

Primary reference:
8855. A. Hyatt and J. P. Smith. 1905. The Triassic cephalopod genera of America. United States Geological Survey Professional Paper 40:1-394 [D. Bottjer/C. Powers/M. Clapham]

Secondary references:

31775 B. Kummel. 1953. American Triassic coiled nautiloids. United States Geological Survey Professional Paper 250:1-104 [M. Clapham/M. Clapham]
10526 N. J. Silberling and K. M. Nichols. 1982. Middle Triassic Molluscan Fossils of Biostratigraphic Significance from the Humboldt Range, Northwestern Nevada. Geological Survey Professional Paper 1207 [A. McGowan/A. McGowan/A. McGowan]
8848 J. P. Smith. 1914. The Middle Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 83:1-254 [D. Bottjer/C. Powers/M. Clapham]