Where: Butte County, California (39.8° N, 121.7° W: paleocoordinates 47.1° N, 89.7° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Chico Formation, Campanian (83.6 - 72.1 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified siliciclastic sediments
Size class: macrofossils
Reposited in the USNM
Primary reference: D. L. Jones. 1963. Upper Cretaceous (Campanian and Maestrichtian) ammonites from southern Alaska. United States Geological Survey Professional Paper 432:1-53 [L. Ivany/L. Ivany/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 158389: authorized by Matthew Clapham, entered by Matthew Clapham on 19.07.2014, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
| |
Baculites chicoensis Trask 1856 ammonite | |
Canadoceras newberryanum Meek 1858 ammonite | |
Gastropoda | |
"Cinulia obliqua" = Biplica obliqua
"Cinulia obliqua" = Biplica obliqua Gabb 1864 snail | |
"Ceratia nexilia" = Acirsa nexilia
"Ceratia nexilia" = Acirsa nexilia White 1889 wentletrap | |
"Perissolax brevirostris" = Perissitys brevirostris
"Perissolax brevirostris" = Perissitys brevirostris Gabb 1864 snail | |
"Sycodes cypraeoides" = Sycodes glabra
"Sycodes cypraeoides" = Sycodes glabra Shumard 1858 fig shell | |
Gyrodes expansa Gabb 1864 moon snail | |
Bivalvia | |
"Cardium (Protocardia) placerensis" = Protocardia placerensis
"Cardium (Protocardia) placerensis" = Protocardia placerensis Gabb 1864 cockle | |
Mactra sp. Linnaeus 1767 clam | |
"Chione varians" = Calva (Calva) varians
"Chione varians" = Calva (Calva) varians Gabb 1864 venus clam | |
Clisocolus dubius Gabb 1864 clam | |
"Crassatella tuscana" = Astarte tuscana
"Crassatella tuscana" = Astarte tuscana Gabb 1864 clam | |
| |
Inoceramus whitneyi Gabb 1869 clam | |
Rostellites | |
Rostellites gabbi White 1903 |