Published papers:

Higgins, P., 2007, Fossils to fertilizer: taphonomic implications of uranium roll-fronts. Palaios, 2007, v. 22, p. 577–582.

MacFadden, B. J. and Higgins, P., 2004., Ancient ecology of 15 million-year-old browsing mammals within C3 plant communities from Panama . Oecologia, v.140, p. 169–182.

Higgins P. and MacFadden, B. J., 2004, “Amount Effect” recorded in oxygen isotopes of Late Glacial horse (Equus) and bison (Bison) teeth from the Sonoran and Chihuahuan deserts, southwestern United States:  Palaeogeography, Palaeoclimatology, Palaeoecology, v. 206, p. 337–353.

MacFadden, B. J., Higgins, P., Clementz, M. T., Jones, D. S., 2004, Diets, habitat preferences, and niche differentiation of Cenozoic sirenians from Florida : Evidence from stable isotopes. Paleobiology, v.30, p. 297-324.

Higgins, P, 2003, A Wyoming succession of Paleocene mammal-bearing localities bracketing the boundary between the Torrejonian and Tiffanian North American Land Mammal “Ages.” Rocky Mountain Geology, v.38, p. 247–280.

Higgins, P, 2003, A new fossil multituberculate from the Paleocene of the Hanna Basin, Wyoming: Journal of Vertebrate Paleontology, v. 23, p. 468–470.

Higgins, P, 1998, North American Land Mammal “Ages” and Cretaceous mammalian biostratigraphy, in Tate ‘98, Life in the late Cretaceous field conference, Tate Museum Guidebook no. 3, p. 81–90.

Higgins, P, 1994, Structure and tectonic evolution of Uncompahgre Canyon, San Juan Mountains, Colorado, in Westervelt, T.N., and Sheriff, W.M., eds., Geology and mines of Uncompahgre Canyon, western San Juan Mountains, Colorado: Geological Society of America Rocky Mountain Section Meeting Field Trip Guidebook, p. 6–13.

Papers submitted:

Higgins, P., submitted, The Archonta: Orders Scandentia and Dermoptera. For submission into a textbook on Cenozoic mammals edited by Jason A. Lillegraven and William Clemens, 48 ms. pg.

Papers in preparation:

Higgins, P. and MacFadden, B. J., in prep., Climate change in North America since the Last Glacial Maximum: Details from stable isotopes.

Higgins, P., in prep., Fossils to fertilizer: taphonomic implications of uranium roll-fronts. For submission to Palaios, 11 ms. pg.

Abstracts:

Higgins, P, 2004, Modeling climate, atmospheric, and vegetational change since the Last Glacial Maximum [abstract]: Journal of Vertebrate Paleontology, v. 22, supplement to number 3, p. XXA.

Higgins, P. and MacFadden, B. J., 2004, Stable isotopes from tooth enamel: Interpreting diet and climate from ancient and modern mammal teeth [abstract]. Inorganic Mass Spectrometry: Elemental and Isotopic Analysis. 16^th Sanibel Conference on Mass Spectrometry, sponsored by the American Society for Mass Spectrometry, Sanibel Island, FL, January 23­–26, 2004.

Higgins, P. and MacFadden, B. J., 2003, Investigating ancient climate through analysis of stable isotopes from fossil tooth enamel [abstract]. 225th American Chemical Society National Meeting, New Orleans , LA , March 23-27, 2003.

Higgins, P. and MacFadden, B. J., 2002, Straight from the horse's mouth: stable isotopes and inferences about Pleistocene climate change in the southwestern United States [abstract]. Journal of Vertebrate Paleontology, v. 20, supplement to number 3, p. 64A.

MacFadden, B. J., Higgins, P., Clementz, M. T., Jones, D. S., 2002, Ancient diets and ecology of Cenozoic sirenians from Florida : evidence from stable isotopes [abstract]. Journal of Vertebrate Paleontology, v. 20, supplement to number 3, p. 81A.

Higgins, P, 2001, New applications of geographic information systems to vertebrate paleontology [abstract]: Journal of Vertebrate Paleontology, v. 19, supplement to number 3, p. 61A.

Higgins, P, 1999, Destruction of vertebrate fossils by uranium roll-fronts: Geological Society of America Abstracts with Programs, v. 31, n. 7, p. A-170.

Higgins, P, 1999, Biostratigraphy of the boundary between Torrejonian and Tiffanian North American Land Mammal “Ages” [abstract]: Journal of Vertebrate Paleontology, v. 19, supplement to number 3, p. 51A.

Higgins, P, 1998, Taphonomy of Paleocene vertebrates, Hanna Formation, Hanna Basin , south-central Wyoming [abstract]: Journal of Vertebrate Paleontology, v. 18, supplement to no. 3, p. 50A–51A.

Dissertation, Theses:

Higgins, P, 2000, Re-evaluation of the boundary between the Torrejonian and Tiffanian North American Land Mammal “Ages,” with description of a new fauna from the Hanna Basin, south-central Wyoming [Ph.D. dissert.]: University of Wyoming, Laramie, Wyoming, 222 p.

Higgins, P, 1999, Uranium roll-fronts as vertebrate taphonomic agents in the Hanna Basin , south-central Wyoming [M.S. thesis]: University of Wyoming , Laramie , Wyoming , 98 p.

Higgins, P, 1995, Reversals of the Earth’s magnetic field and extinction of animal species [B.S. thesis]: Fort Lewis College Biology Department , Durango , Colorado .

Higgins, P, 1995, Vertebrate fossil locality on “ Moving Mountain ,” Durango , Colorado [B.S. thesis]: Fort Lewis College Geology Department , Durango , Colorado .