@article{clarke_ksepka_smith_norell_2014, title={Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (vol 157, pg 586, 2009)}, volume={172}, number={1}, journal={Zoological Journal of the Linnean Society}, author={Clarke, J. A. and Ksepka, D. T. and Smith, N. A. and Norell, M. A.}, year={2014}, pages={226–229} }
 @article{clarke_ksepka_smith_norell_2009, title={Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)}, volume={157}, ISSN={["1096-3642"]}, DOI={10.1111/j.1096-3642.2009.00550.x}, abstractNote={We report a nearly complete skeleton of a new species of stem roller (Aves, Coracii) from the early Eocene Green River Formation of North America. The new species is most closely related to two species-depauperate lineages, Coraciidae (rollers) and Brachypteraciidae (ground rollers), that form a monophyletic crown clade (Coracioidea) with an exclusively Old World extant distribution. Phylogenetic analysis utilizing a matrix of 133 morphological characters and sequence data from three genes (RAG-1, c-myc, and ND2) identifies the new species as a stem member of the Coracii more closely related to the crown clade than the only previously identified New World taxon, Primobucco mcgrewi. The phylogenetic placement of the new species and Primobucco mcgrewi indicates a widespread northern hemisphere distribution in the Eocene with subsequent restriction to Africa, Madagascar, Australia, and temperate to tropical parts of Europe and Asia. It provides evidence of further ecological diversity in early stem Coracii and convergence on crown morphologies. The new species contributes to mounting evidence that extant distributions for major avian subclades may be of comparatively recent origin. Further late Palaeogene sampling is needed to elucidate potential drivers for shifting avian distributions and disappearance of Coracii from North America.}, number={3}, journal={ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY}, author={Clarke, Julia A. and Ksepka, Daniel T. and Smith, N. Adam and Norell, Mark A.}, year={2009}, month={Nov}, pages={586–611} }
 @article{smith_olson_clarke_2007, title={First Atlantic record of the puffin Cerorhinca (Aves, Alcidae) from the Pliocene of North Carolina}, volume={27}, ISSN={["0272-4634"]}, DOI={10.1671/0272-4634(2007)27[1039:FAROTP]2.0.CO;2}, abstractNote={N. ADAM SMITH, STORRS L. OLSON, and JULIA A. CLARKE; North Carolina State University, Department of Marine, Earth and Atmospheric Sciences, Campus Box 8208, Raleigh, North Carolina 27695–8208 U.S.A., adam_smith@ncsu.edu; National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia 20560–0131 U.S.A., olson@si.edu; North Carolina Museum of Natural Sciences, 11 West Jones St., Raleigh, North Carolina 27601–1029 U.S.A., julia_clarke@ncsu.edu.}, number={4}, journal={JOURNAL OF VERTEBRATE PALEONTOLOGY}, author={Smith, N. Adam and Olson, Storrs L. and Clarke, Julia A.}, year={2007}, month={Dec}, pages={1039–1042} }