William A. Cobban

William A. Cobban publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where William A. Cobban sits on this spectrum.

William A. Cobban D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where William A. Cobban sits on this spectrum.

Research.com Recognitions

• 1982 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Best Publications

• A USGS Zonal Table for the Upper Cretaceous Middle Cenomanian--Maastrichtian of the Western Interior of the United States Based on Ammonites, Inoceramids, and Radiometric Ages

  William A. Cobban;Ireneusz Walaszczyk;John D. Obradovich;Kevin C. McKinney

  349
  Citations

• CORRELATION OF THE CRETACEOUS FORMATIONS OF THE WESTERN INTERIOR OF THE UNITED STATES

  William A Cobban;John B Reeside

  295
  Citations

• The Red Bird section of the Upper Cretaceous Pierre Shale in Wyoming, with a section on a new echinoid from the Cretaceous Pierre Shale of eastern Wyoming

  J.R. Gill;W.A. Cobban;P.M. Kier

  277
  Citations

• Stratigraphy and geologic history of the Montana group and equivalent rocks, Montana, Wyoming, and North and South Dakota

  James R. Gill;William Aubrey Cobban

  255
  Citations

• Stratigraphy and ammonite fauna of the Graneros Shale and Greenhorn Limestone near Pueblo, Colorado

  William Aubrey Cobban;G.R. Scott

  219
  Citations

• The Global Boundary Stratotype Section and Point for the base of the Turonian Stage of the Cretaceous： Pueblo, Colorado, U.S.A.

  W.J. Kennedy;I. Walaszczyk;W.A. Cobban

  210
  Citations

• Pueblo, Colorado, USA, candidate Global Boundary Stratotype Section and Point for the base of the Turonian Stage of the Cretaceous, and for the base of the Middle Turonian Substage, with a revision of the Inoceramidae (Bivalvia)

  William J. Kennedy;Ireneusz Walaszczyk;William A. Cobban

  188
  Citations

• The Red Bird section of the Upper Cretaceous Pierre Shale in Wyoming

  J. R. Gill;W. A. Cobban;P. M. Kier

  185
  Citations

• Effect of diagenesis on the Sr, O, and C isotope composition of late Cretaceous mollusks from the Western Interior Seaway of North America

  J. Kirk Cochran;Kristal Kallenberg;Neil H. Landman;Peter J. Harries

  157
  Citations

• Studies of the Mowry shale (Cretaceous) and contemporary formations in the United States and Canada

  John B. Reeside;William Aubrey Cobban

  132
  Citations

• Stratigraphy and interregional correlation of the Cenomanian-Turonian transition in the Western Interior of the United States near Pueblo, Colorado, a potential boundary stratotype for the base of the Turonian stage

  Unknown

  126
  Citations

• The Late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States

  William Aubrey Cobban

  105
  Citations

• Mode of life and habitat of scaphitid ammonites

  Neil H. Landman;William A. Cobban;Neal L. Larson

  96
  Citations

• Stratigraphy and nomenclature of some Upper Cretaceous and lower Tertiary rocks in south-central Wyoming

  James R. Gill;E.A. Merewether;William Aubrey Cobban

  91
  Citations

• Mid-Cretaceous ammonite zones, Western Interior, United States

  William A. Cobban

  90
  Citations

• Ammonite correlation of the uppermost Campanian of Western Europe, the U.S.Gulf Coast, Atlantic Seaboard and Western Interior, and the numerical age of the base of the Maastrichtian

  W. J. Kennedy;W. A. Cobban;G. R. Scott

  86
  Citations

• Stratigraphy of the Niobrara Formation at Pueblo, Colorado

  G.R. Scott;W.A. Cobban

  83
  Citations

• Scaphites of the “Nodosus Group” from the Upper Cretaceous (Campanian) of the Western Interior of North America

  Neil H. Landman;W. James Kennedy;William A. Cobban;Neal L. Larson

  83
  Citations

• The Manson Impact Structure: 40Ar/39Ar Age and Its Distal Impact Ejecta in the Pierre Shale in Southeastern South Dakota.

  G.A. Izett;W. A. Cobban;J. D. Obradovich;Michael J. Kunk

  78
  Citations

• Maastrichtian ammonites chiefly from the Prairie Bluff Chalk in Alabama and Mississippi

  W. A. Cobban;W. J. Kennedy

  75
  Citations

• Scaphitoid cephalopods of the Colorado group

  W.A. Cobban

  74
  Citations

• Colorado Shale of Central and Northwestern Montana and Equivalent Rocks of Black Hills

  William Aubrey Cobban

  69
  Citations