North Fork of Squaw Creek, 3 miles north of Kelly's ranch (Triassic of the United States)

Where: Shasta County, California (40.9° N, 122.1° W: paleocoordinates 13.6° N, 53.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hosselkus Formation, Tuvalian (232.0 - 221.5 Ma)

• Upper part of the Hosselkus limestone, about 150 feet above beds with Tropites subbullatus.

Environment/lithology: lithified 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 33327: authorized by David Bottjer, entered by Catherine Powers on 25.07.2003, edited by Matthew Clapham and Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Dimyidae
Dimyodon storrsi n. sp. Smith 1927 scallop
good
 Ostreida - Pteriidae
Avicula soperi n. sp. Smith 1927 pearl oyster
good
 Ostreida - Bakevelliidae
 Ostreida - Halobiidae
Halobia austriaca Mojsisovics 1874 oyster
good
 Carditida - Carditidae
Cardita jenkinsi n. sp. Smith 1927 clam
good
 Carditida - Cardiniidae
Cardinia gleimi n. sp. Smith 1927 clam
good
 Cardiida - Kalenteridae
Myoconcha nana Smith 1927 clam
good
 Trigoniida - Trigonodidae
? Anoplophora shastensis n. sp. Smith 1927 clam
good
Gastropoda
 Trochonematoidea - Lophospiridae
Worthenia klamathensis n. sp. Smith 1927 snail
good
 Patellogastropoda - Patellidae
"Patella" sheehani n. sp. Smith 1927 limpet
good
 Hypsogastropoda - Coelostylinidae
Omphaloptycha shastensis n. sp. Smith 1927 snail
good
Omphaloptycha obesa n. sp. Smith 1927 snail
good
Cephalopoda
 Ceratitida - Arcestidae
Arcestes (Proarcests) carpenteri n. sp. Smith 1927 ceratite
good
Arcestes (Proarcestes) whitneyi Smith 1927 ceratite
good
Arcestes (Proarcestes) shastensis n. sp. Smith 1927 ceratite
good
 Ceratitida - Klamathitidae
Klamathites schucherti n. sp. Smith 1927 ceratite
good
Klamathites kellyi Smith 1927 ceratite
good
 Ceratitida - Pinacoceratidae
Pinacoceras rex von Mojsisovics 1873 ceratite
good
 Ceratitida - Clionitidae
"Choristoceras kellyi n. sp." = Sympolycyclus kellyi, "Polycyclus major n. sp." = Sympolycyclus kellyi
"Choristoceras kellyi n. sp." = Sympolycyclus kellyi Smith 1927 ceratite
good
"Polycyclus major n. sp." = Sympolycyclus kellyi Smith 1927 ceratite
good
 Ceratitida - Tropitidae
Tropites shastensis n. sp. Smith 1927 ceratite
good
Tropites reticulatus Smith 1927 ceratite
good
Tropites arthaberi Smith 1927 ceratite
good
Tropites kellyi n. sp. Smith 1927 ceratite
good
Tropites dieneri n. sp. Smith 1927 ceratite
good
"Tropites johnsoni" = Margaritropites johnsoni Smith 1927 ceratite
good
"Tropites philippii n. sp." = Margaritropites johnsoni Smith 1927 ceratite
good
"Tropites kokeni n. sp." = Margaritropites kokeni Smith 1927 ceratite
good
"Margarites jokelyi" = Hoplotropites jokelyi Hauer 1855 ceratite
good
Margarites senilis Mojsisovics 1893 ceratite
good
Margarites septentrionalis n. sp. Smith 1927 ceratite
good
Anatropites hauchecornei Mojsisovics 1893 ceratite
good
Discotropites laurae Mojsisovics 1893 ceratite
good
Discotropites lineatus Smith 1927 ceratite
Discotropites sengeli Mojsisovics 1893 ceratite
good
"Halorites (Homerites) semiglobosus" = Homerites semiglobosus Hauer 1855 ceratite
good
 Ceratitida - Haloritidae
Juvavites (Anatomites) subintermittens Hyatt and Smith 1905 ceratite
good
Juvavites (Anatomites) adalberti Mojsisovics 1893 ceratite
good
Juvavites (Anatomites) externiplicatus Mojsisovics 1893 ceratite
good
Sagenites (Trachysagenites) herbichi Mojsisovics 1893 ceratite
good
 Ceratitida - Tropiceltitidae
Tropiceltites caducus Dittmar 1866 ceratite
good
 Ceratitida - Juvavitidae
"Juvavites kellyi n. sp." = Goniojuvavites kellyi Smith 1927 ceratite
good
Juvavites (Anatomites) subinterruptus Mojsisovics 1893 ceratite
Juvavites knowltoni Smith 1927 ceratite
good
 Ceratitida - Thisbitidae
Thisbites uhligi Mojsisovics 1893 ceratite
good
 Ceratitida - Danubitidae
Celtites steindachneri Mojsisovics 1893 ceratite
 Phylloceratida - Discophyllitidae
Rhacophyllite (Discophyllites) patens von Mojsisovics 1873 ammonite
good
 Phylloceratida - Ussuritidae
Tirolites (Metatirolites) subpygmaeus Mojsisovics 1893 ammonite
good
Tirolites (Metatirolites) quadrangulus Hauer 1860 ammonite
good