Where: Oregon (44.1° N, 119.4° W: paleocoordinates 22.9° N, 57.5° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: morganense ammonoid zone, Graylock Formation, Angulata (201.3 - 196.5 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified limestone
Size class: macrofossils
Collection methods: Repository: Northwest Museum of Natural History (NWMNH)
Primary reference: D. G. Taylor and J. Guex. 2002. The Triassic/Jurassic System boundary in the John Day Inlier, east-central Oregon. Oregon Geology 64:3-28 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 157617: authorized by Matthew Clapham, entered by Matthew Clapham on 26.06.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Nevadaphyllites compressus Guex 1980 ammonite
Schistophylloceras aff. aulonotum Herbich 1878 ammonite | |
Discamphiceras sp. ammonite
Paradiscamphiceras dickinsoni Taylor 1988 ammonite | |
Bivalvia | |
Agerchlamys boellingi Taylor and Guex 2002 scallop |