Where: Alaska (62.0° N, 147.7° W: paleocoordinates 70.2° N, 103.8° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Pachydiscus kamishakensis ammonoid zone, Matanuska Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• Upper part of member 3 of Matanuska formation. Late Campanian or Maestrichtian. Pachydiscus kamishakensis zone.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified, sandy siliciclastic sediments
Size class: macrofossils
Collected by A. Grantz, D.L. Jones in 1959; 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 64020: authorized by Linda Ivany, entered by Linda Ivany on 29.08.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Damesites hetonaiensis Matsumoto 1942 ammonite | |
Patagiosites alaskensis Jones 1963 ammonite | |
"Neophylloceras ramosum" = Hypophylloceras (Neophylloceras) ramosum
"Neophylloceras ramosum" = Hypophylloceras (Neophylloceras) ramosum Meek 1857 ammonite |