Where: Japan (42.2° N, 142.8° E: paleocoordinates 47.0° N, 132.1° E)
• coordinate stated in text
• outcrop-level geographic resolution
When: Baculites subanceps ammonoid zone, Chinomigawa Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• Topmost part of Unit U6.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, concretionary, sandy mudstone
Size class: macrofossils
Preservation: mold/impression
Collection methods: surface (float)
• Repository: National Museum of Nature and Science, Tsukuba (NMNS)
Primary reference: Y. Shigeta, M. Izukura, T. Nishimura and Y. Tsutsumi. 2016. Middle and late Campanian (Late Cretaceous) ammonoids from the Urakawa area, Hokkaido, northern Japan. Paleontological Research 20:322-366 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 181932: authorized by Matthew Clapham, entered by Matthew Clapham on 08.10.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Pachydiscus excelsus Matsumoto 1979 ammonite |