Upper Cretaceous

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Isotope sclerochronology of ammonites (Baculites Compressus) from methane seep and non-seep sites in the Late Cretaceous Western Interior Seaway, USA: Implications for ammonite habitat and mode of life
Neil H. Landman, J. Kirk Cochran, Mariah Slovacek, Neal L. Larson, Matthew P. Garb, Jamie Brezina and James D. Witts

American Journal of Science June 2018, 318 (6) 603-639; DOI: https://doi.org/10.2475/06.2018.01
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The Magothy Formation of northeastern Maryland
Nelson Horatio Darton

American Journal of Science May 1893, s3-45 (269) 407-419; DOI: https://doi.org/10.2475/ajs.s3-45.269.407
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Notes on Mesozoic vertebrate fossils
Othniel Charles Marsh

American Journal of Science August 1892, s3-44 (260) 171-176; DOI: https://doi.org/10.2475/ajs.s3-44.260.171
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Notice of new reptiles from the Laramie Formation
Othniel Charles Marsh

American Journal of Science May 1892, s3-43 (257) 449-453; DOI: https://doi.org/10.2475/ajs.s3-43.257.449
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Some suggestions upon the methods of grouping the formations of the middle Cretaceous and the employment of an additional term in its nomenclature
George Homans Eldridge

American Journal of Science October 1889, s3-38 (226) 313-321; DOI: https://doi.org/10.2475/ajs.s3-38.226.313
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Three formations of the Middle Atlantic slope
W. J. McGee

American Journal of Science April 1888, s3-35 (208) 328-330; DOI: https://doi.org/10.2475/ajs.s3-35.208.328
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Notes on the Laramie group of southern Colorado and northern New Mexico east from the Spanish ranges
John James Stevenson

American Journal of Science August 1879, s3-18 (104) 129-134; DOI: https://doi.org/10.2475/ajs.s3-18.104.129
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Note on the Fox Hills group of Colorado
John J. Stevenson

American Journal of Science May 1879, s3-17 (101) 369-373; DOI: https://doi.org/10.2475/ajs.s3-17.101.369
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Note on the age of the Laramie group or Rocky Mountain lignitic formation
Henry Martyn Bannister

American Journal of Science March 1879, s3-17 (99) 243-245; DOI: https://doi.org/10.2475/ajs.s3-17.99.243

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