2016 - PhD, University of Georgia
2008 - MS, University of California, Riverside
2004 - BS, University of California, Riverside
Preservation and paleoecology of Paleozoic marine invertebrates, particularly trilobites and conulariids
Cambrian trilobites as archives for Anthropocene biomarkers and other chemical compounds. John, D.L., P.M. Medeiros, L.C. Babcock-Adams, S.E. Walker, Anthropocene 17:99-106, 2017.
Anthropocene overprints in trilobite biomarkers from the Cambrian. John, D.L. John, S.E. Walker, L.C. Babcock-Adams, P.M. Medeiros. GSA Annual Conference, Baltimore, MD, 2015
Testing symbiotic morphology in trilobites under dysoxic and oxic conditions from Cambrian to Early Ordovician Lagerstätten. John, D.L. and S.E. Walker. Palaeogeography, Palaeoclimatology, Palaeoecology 441:704-720.
Symbiotic trilobite morphology in the Cambrian: phylogeny versus environment. John, D.L and S.E. Walker. GSA Annual Conference, Vancouver, BC, 2014
Unusually preserved Metaconularia manni (Roy, 1935) from the Silurian of Iowa, and other representatives of the genus. John, D.L., N.C. Hughes, A.G. Collins, M. Colbert. Journal of Paleontology 84:1-31, 2010
Soft-body preservation of Metaconularia, John, D.L., N.C. Hughes, A.G. Collins, M. Colbert. Abstracts with Programs – Geological Society of America 38:305, 2006
Exploring trilobite molt series. John, D.L., 2004 California Paleontology Confererence Abstracts, PaleoBios 24(no.1, Suppl.):4-5, 2004