Where: Alaska (61.8° N, 148.6° W: paleocoordinates 70.4° N, 105.3° W)
• coordinate stated in text
• 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 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 158323: authorized by Matthew Clapham, entered by Matthew Clapham on 18.07.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
"Diplomoceras notabile" = Diplomoceras cylindraceum
"Diplomoceras notabile" = Diplomoceras cylindraceum Defrance 1816 ammonite |