Divide between Troy Canyon and South Fork of American Canyon (Triassic of the United States)

Also known as Fossil Hill

Where: Nevada (40.3° N, 118.1° W: paleocoordinates 11.2° N, 42.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Illyrian (247.2 - 242.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, silty limestone

Size class: macrofossils

Collected by J.P. Smith; reposited in the USNM

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33225: authorized by David Bottjer, entered by Catherine Powers on 24.07.2003, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Halobiidae
Daonella moussoni4 Merian 1853 oyster
Ranges from meeki-occidentalis zones
 Ostreida - Pteriidae
Rhynchopterus obesus4 Gabb 1864 pearl oyster
Cephalopoda
 Nautilida - Tainoceratidae
Germanonautilus furlongi n. sp.4 Smith 1914 nautiloid
 Nautilida - Grypoceratidae
Grypoceras whitneyi4 Gabb 1864 nautiloid
 Nautilida - Liroceratidae
Paranautilus smithi n. sp.2 Kummel 1953 nautiloid
 Aulacoceratida - Xiphoteuthididae
"Atractites burckhardti n. sp." = Calliconites nevadensis4, Atractites sp.3, Atractites sp.3, Atractites elegans n. sp.4
"Atractites burckhardti n. sp." = Calliconites nevadensis4 Meek 1877 belemnite
Ranges from meeki-occidentalis zones
Atractites sp.3 Guembel 1861 belemnite
Atractites sp.3 Guembel 1861 belemnite
Atractites elegans n. sp.4 Smith 1914 belemnite
 Phylloceratida - Ussuritidae
 Ceratitida - Gymnitidae
Gymnites perplanus4 Meek 1877 ceratite
 Ceratitida - Ptychitidae
Ptychites evansi n. sp.4 Smith 1914 ceratite
Ranges from rotelliformis-meeki zones
 Ceratitida - Ceratitidae
Eutomoceras laubei Meek 1877 ceratite
Ranges from meeki-lower occidentalis zone
Acrochordiceras foltzense n. sp.4 Smith 1914 ceratite
"Ceratites (Paraceratites) gabbi" = Eudiscoceras gabbi4 Meek 1877 ceratite
"Ceratites" weaveri4 Smith 1914 ceratite
 Ceratitida - Sageceratidae
Sageceras cf. walteri1 Mojsisovics 1882 ceratite
 Ceratitida - Arcestidae
"Proarcestes cf. balfouri" = Proarcestes balfouri3, "Arcestes (Proarcestes) hartzelli n. sp." = Proarcestes balfouri4
"Proarcestes cf. balfouri" = Proarcestes balfouri3 Oppel 1863 ceratite
Ranges from rotelliformis-lower meeki zones
"Arcestes (Proarcestes) hartzelli n. sp." = Proarcestes balfouri4 Oppel 1863 ceratite
Ranges from rotelliformis-lower meeki zones
 Ceratitida - Longobarditidae
Longobardites cf. zsigmondyi3, "Dalmatites parvus n. sp." = Longobardites parvus4, "Longobardites parvus" = Longobardites parvus3, "Dalmatites minutus n. sp." = Longobardites parvus4
Longobardites cf. zsigmondyi3 Bockh 1874 ceratite
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." = Longobardites parvus4 Smith 1914 ceratite
Ranges from rotelliformis-meeki zones
"Longobardites parvus" = Longobardites parvus3 Smith 1914 ceratite
"Dalmatites minutus n. sp." = Longobardites parvus4 Smith 1914 ceratite
Ranges from rotelliformis-meeki zones
 Ceratitida - Acrochordiceratidae
Acrochordiceras hyatti3 Meek 1877 ceratite
 Ceratitida - Trachyceratidae
Trachyceras (Anolcites) drakei n. sp.4 Smith 1914 ceratite
Trachyceras (Anolcites) barberi n. sp.4 Smith 1914 ceratite
 Pseudorthocerida - Trematoceratidae
"Orthoceras campanile" = Trematoceras elegans4
"Orthoceras campanile" = Trematoceras elegans4 Muenster 1831