Divide between Troy Canyon and South Fork of American Canyon (rotelliformis) (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: rotelliformis ammonoid zone, Illyrian (247.2 - 242.0 Ma)

• Smith's collections were made from float; specimens are divided here based on ages from later bedrock-controlled sampling (Silberling & Nichols, 1982; Monnet & Bucher, 2005).

• 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: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 142669: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2013, edited by Catherine Powers

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Halobiidae
Daonella americana n. sp. Smith 1914 oyster
Cephalopoda
 Ceratitida - Ceratitidae
"Ceratites (Paraceratites) vogdesi n. sp." = Brackites vogdesi, "Paraceratites vogdesi" = Brackites vogdesi2, "Paraceratites vogdesi" = Brackites vogdesi2, "Ceratites crassicornu n. sp." = Brackites vogdesi, "Ceratites kingi n. sp." = Brackites vogdesi, "Ceratites haguei n. sp." = Brackites vogdesi, "Ceratites (Paraceratites) trojanus n. sp." = Brackites vogdesi, "Ceratites (Paraceratites) cricki n. sp." = Silberlingitoides cricki, "Ceratites (Paraceratites) burckhardti n. sp." = Silberlingitoides cricki, "Ceratites (Paraceratites) taurus n. sp." = Silberlingitoides cricki, "Ceratites (Paraceratites) newberryi" = Silberlingitoides cricki, "Ceratites (Paraceratites) clarkei n. sp." = Silberlingitoides clarkei, "Paraceratites clarkei" = Silberlingitoides clarkei2, "Ceratites (Paraceratites) wardi n. sp." = Silberlingitoides clarkei, "Ceratites rectangularis" = Silberlingitoides clarkei, "Ceratites (Phillipites) lawsoni n. sp." = Dixieceras lawsoni, "Beyrichites rotelliformis" = Gymnotoceras rotelliformis1, "Beyrichites tenuis n. sp." = Gymnotoceras rotelliformis, "Ceratites (Phillipites) argentarius n. sp." = Gymnotoceras rotelliformis, "Ceratites (Gymnotoceras) blakei" = Gymnotoceras blakei1, "Beyrichites falciformis n. sp." = Gymnotoceras blakei, Eutomoceras lahontanum n. sp., "Eutomoceras (Halilucites) dalli n. sp." = Eutomoceras dalli, "Hungarites fittingensis n. sp." = Eutomoceras dalli
"Ceratites (Paraceratites) vogdesi n. sp." = Brackites vogdesi Smith 1904 ceratite
"Paraceratites vogdesi" = Brackites vogdesi2 Smith 1904 ceratite
Specimens in pl 39, fig 6; pl 52, figs 15-18 are P. clarkei
"Paraceratites vogdesi" = Brackites vogdesi2 Smith 1904 ceratite
"Ceratites crassicornu n. sp." = Brackites vogdesi Smith 1904 ceratite
"Ceratites kingi n. sp." = Brackites vogdesi Smith 1904 ceratite
"Ceratites haguei n. sp." = Brackites vogdesi Smith 1904 ceratite
"Ceratites (Paraceratites) trojanus n. sp." = Brackites vogdesi Smith 1904 ceratite
"Ceratites (Paraceratites) cricki n. sp." = Silberlingitoides cricki Smith 1914 ceratite
"Ceratites (Paraceratites) burckhardti n. sp." = Silberlingitoides cricki Smith 1914 ceratite
"Ceratites (Paraceratites) taurus n. sp." = Silberlingitoides cricki Smith 1914 ceratite
"Ceratites (Paraceratites) newberryi" = Silberlingitoides cricki Smith 1914 ceratite
"Ceratites (Paraceratites) clarkei n. sp." = Silberlingitoides clarkei Smith 1914 ceratite
"Paraceratites clarkei" = Silberlingitoides clarkei2 Smith 1914 ceratite
"Ceratites (Paraceratites) wardi n. sp." = Silberlingitoides clarkei Smith 1914 ceratite
"Ceratites rectangularis" = Silberlingitoides clarkei Smith 1914 ceratite
"Ceratites (Phillipites) lawsoni n. sp." = Dixieceras lawsoni Smith 1914 ceratite
"Beyrichites rotelliformis" = Gymnotoceras rotelliformis1 Meek 1877 ceratite
"Beyrichites tenuis n. sp." = Gymnotoceras rotelliformis Meek 1877 ceratite
"Ceratites (Phillipites) argentarius n. sp." = Gymnotoceras rotelliformis Meek 1877 ceratite
"Ceratites (Gymnotoceras) blakei" = Gymnotoceras blakei1 Gabb 1864 ceratite
Not pl 55, figs 1-5,7-9 (or pl 14, fig 10b; pl 65, figs 14-16 in Smith, 1914) = Parafrechites meeki
"Beyrichites falciformis n. sp." = Gymnotoceras blakei Gabb 1864 ceratite
Eutomoceras lahontanum n. sp. Smith 1914 ceratite
"Eutomoceras (Halilucites) dalli n. sp." = Eutomoceras dalli Smith 1914 ceratite
"Hungarites fittingensis n. sp." = Eutomoceras dalli Smith 1914 ceratite
Not pl 29, figs 12-14 (= ?Eutomoceras dunni)
 Ceratitida - Gymnitidae
? Tropigymnites cf. planorbis2 Hauer 1896 ceratite
 Ceratitida - Aplococeratidae
"Dinarites desertorum n. sp." = Metadinarites desertorus, "? Dinarites pygmaeus n. sp." = Metadinarites desertorus
"Dinarites desertorum n. sp." = Metadinarites desertorus Smith 1914 ceratite
"? Dinarites pygmaeus n. sp." = Metadinarites desertorus Smith 1914 ceratite
 Ceratitida - Proteusitidae
"Tropigastrites lahontanus n. sp." = Tropigastrites lahontanus, "Tropigastrites lahontanus" = Tropigastrites lahontanus2, "Tropigastrites lahontanus" = Tropigastrites lahontanus2, "Tropigastrites rothpletzi n. sp." = Tropigastrites lahontanus, "Gymnites (Anagymnites) rosenbergi n. sp." = Tropigastrites lahontanus
"Tropigastrites lahontanus n. sp." = Tropigastrites lahontanus Smith 1914 ceratite
Only specimen in pl 19, figs 14-15a
"Tropigastrites lahontanus" = Tropigastrites lahontanus2 Smith 1914 ceratite
Specimens on pl 18, figs 15-23
"Tropigastrites lahontanus" = Tropigastrites lahontanus2 Smith 1914 ceratite
Specimens in pl 18, figs 11-14; pl 88, figs 14,15
"Tropigastrites rothpletzi n. sp." = Tropigastrites lahontanus Smith 1914 ceratite
"Gymnites (Anagymnites) rosenbergi n. sp." = Tropigastrites lahontanus Smith 1914 ceratite
 Aulacoceratida - Xiphoteuthididae
Atractites clavatulus n. sp. Smith 1914 belemnite