Sample Detail of
Sample: Sample No. 1 of G.C. Martin, 1913 -- USGS No. Mesozoic loc. 8559
Locality: Field No. 1 of G.C. Martin, 1913
Description: G.C. Martin, 1913. Float from Black Shale Creek, tributary to Boulder Creek. Upper part of Matanuska formation. Late Campanian or Maestrichtian. Pachydiscus kamishakensis zone.
Location: Alaska Quadrangle: Anchorage
Reference
Title: Upper Cretaceous (Campanian and Maestrichtian) Ammonites from Southern Alaska ,  1963
Report by: David L. Jones
Age: Campanian-Maastrichtian (late Campanian - Maastrichtian)
Formation: Matanuska Formation
Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Neophylloceras hetonaiense