2011

O'Keefe et al. Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia). Science 12 August 2011: 870-873.

O'Keefe, F. R., H. P. Street, B. C. Wilhelm, C. Richards, and H. Zhu. 2011. A new skeleton of the cryptoclidid plesiosaur Tatenectes laramiensis reveals a novel body shape among plesiosaurs. Journal of Vertebrate Paleontology 31(2): 330-339.

2009

O'Keefe, F. R. and H. Street. 2009. Osteology of the Cryptocleidoid Plesiosaur Tatenectes Laramiensis, with Comments on the Taxonomic Status of the Cimoliasauridae. Journal of Vertebrate Paleontology 29(1):48–57, March 2009.

O'Keefe, F. R., H. P. Street, J. P. Cavigelli, J. J. Socha, and R. D. O'Keefe. 2009. A plesiosaur containing an ichthyosaur embryo as stomach contents from the Sundance Formation of the Bighorn Basin, Wyoming. Journal of Vertebrate Paleontology 29(4): 1306-1310.

O'Keefe, F. R., E. V. Fet, and J. M. Harris. 2009. Compilation, calibration, and synthesis of faunal and floral radiocarbon dates, Rancho La Brea, California. Contributions in Science 518: 1-16.

2008

O'Keefe, F. R. 2008. Cranial Anatomy and Taxonomy of Dolichorhynchops Bonneri New Combination, A Polycotlyid (Sauropterygia: Plesiosauria) from the Pierre Shale of Wyoming and South Dakota. Journal of Vertebrate Paleontology 28(3):664–676, September 2008

2006

O'Keefe, F. R. and N. Hiller. 2006. Morphologic and ontogenetic patterns in elasmosaur neck length, with comments on the taxonomic utility of neck length variables. Paludicola (Nicholls Memorial Volume) 5(4): 206-229.

O'Keefe, F. R., C. A. Sidor, H. C. E. Larsson, A. Maga, and O. Ide. 2006. Evolution and homology of the astragalus in early amniotes: new fossils, new perspectives. Journal of Morphology 267: 415-425.

O'Keefe, F. R. 2006. Neoteny and the plesiomorphic condition of the plesiosaur basicranium. in M. T. Carrano, T. J. Gaudin, R. W. Blob and J. R. Wible, eds. Amniote Paleobiology. University of Chicago Press, Chicago, Il.

2005

O’Keefe, F. R. and M. T. Carrano. 2005. Correlated trends in the evolution of the plesiosaur locomotor system. Paleobiology 31(4): 656-675.

O'Keefe, F. R., C. A. Sidor, H. C. E. Larsson, A. Maga, and O. Ide. 2005. The vertebrate fauna of the Upper Permian of Niger— III. Morphology and ontogeny of the hindlimb of Moradisaurus grandis (Reptila, Captorhinidae, Moradisaurinae) from the Upper Permian of Niger. Journal of Vertebrate Paleontology 25(2): 309-319.

2004

O'Keefe, F. R. 2004. Preliminary description and phylogenetic position of a new genus and species of plesiosaur (Reptilia: Sauropterygia) from the Toarcian of Holzmaden, Germany. Journal of Paleontology 78(5): 973-988.

2003

O'Keefe, F. R. and W. Wahl. 2003. Current taxonomic status of Pantosaurus striatus from the Upper Jurassic Sundance Formation, Wyoming. Paludicola 4(2): 37-47.

O'Keefe, F. R. and W. Wahl. 2003. Preliminary report on the osteology and relationships of a new aberrant cryptocleidoid plesiosaur from the Sundance Formation, Wyoming. Paludicola 4(2): 48-68.

2002

O'Keefe, F. R. 2002. The evolution of plesiosaur and pliosaur morphotypes in the Plesiosauria (Reptilia: Sauropterygia). Paleobiology 28(1), 101-112.

2001

O'Keefe, F. R. 2001. A cladistic analysis and taxonomic revision of the Plesiosauria (Reptilia: Sauropterygia). Acta Zoologica Fennica 213: 1-63.

O'Keefe, F. R. and P. J. Wagner. 2001. Inferring and testing hypotheses of cladistic character dependence using character compatibility. Systematic Biology 50(5): 657-675.

O'Keefe, F. R. 2001. Ecomorphology of plesiosaur flipper geometry. Journal of Evolutionary Biology 14(6): 987-991.

Cover of O'Keefe F.R. 2001. A cladistic analysis and taxonomic revision of the Plesiosauria (Reptilia: Sauropterygia). Acta Zoologica Fennica 213: 1-63.