| A cladistic analysis and taxonomic revision of the Plesiosauria (Reptilia: Sauropterygia) FR O’Keefe | 269 | 2001 |
| The evolution of plesiosaur and pliosaur morphotypes in the Plesiosauria (Reptilia: Sauropterygia) FR O'Keefe Paleobiology 28 (1), 101-112, 2002 | 155 | 2002 |
| Viviparity and K-selected life history in a Mesozoic marine plesiosaur (Reptilia, Sauropterygia) FR O’Keefe, LM Chiappe Science 333 (6044), 870-873, 2011 | 119 | 2011 |
| Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea CA Sidor, FR O'Keefe, R Damiani, JS Steyer, RMH Smith, HCE Larsson, ... Nature 434 (7035), 886-889, 2005 | 115 | 2005 |
| Preliminary description and phylogenetic position of a new plesiosaur (Reptilia: Sauropterygia) from the Toarcian of Holzmaden, Germany FR O'keefe Journal of Paleontology 78 (5), 973-988, 2004 | 101 | 2004 |
| Correlated trends in the evolution of the plesiosaur locomotor system FR O'Keefe, MT Carrano Paleobiology 31 (4), 656-675, 2005 | 91 | 2005 |
| The fossil record of phenotypic integration and modularity: a deep-time perspective on developmental and evolutionary dynamics A Goswami, WJ Binder, J Meachen, FR O’Keefe Proceedings of the National Academy of Sciences 112 (16), 4891-4896, 2015 | 88 | 2015 |
| Morphologic and ontogenetic patterns in elasmosaur neck length, with comments on the taxonomic utility of neck length variables FR O’Keefe, N Hiller | 83 | 2006 |
| Aristonectes quiriquinensis, sp. nov., a new highly derived elasmosaurid from the upper Maastrichtian of central Chile RA Otero, S Soto-Acuņa, FR O'Keefe, JP O’Gorman, W Stinnesbeck, ... Journal of Vertebrate Paleontology 34 (1), 100-125, 2014 | 82 | 2014 |
| Compilation, calibration, and synthesis of faunal and floral radiocarbon dates, Rancho La Brea, California FR O’Keefe, EV Fet, JM Harris | 78 | 2009 |
| Osteology of the cryptocleidoid plesiosaur Tatenectes laramiensis, with comments on the taxonomic status of the Cimoliasauridae FR O'Keefe, HP Street Journal of Vertebrate Paleontology 29 (1), 48-57, 2009 | 76 | 2009 |
| On the cranial anatomy of the polycotylid plesiosaurs, including new material of Polycotylus latipinnis, Cope, from Alabama FR O'Keefe Journal of Vertebrate Paleontology 24 (2), 326-340, 2004 | 73 | 2004 |
| Inferring and testing hypotheses of cladistic character dependence by using character compatibility FR O'Keefe, PJ Wagner Systematic Biology 50 (5), 657-675, 2001 | 68 | 2001 |
| The braincase of Youngina capensis (Reptilia, Diapsida): new insights from high-resolution CT scanning of the holotype NM Gardner, CM Holliday, FR O’Keefe | 67 | 2010 |
| The vertebrate fauna of the Upper Permian of Niger. IV. Nigerpeton ricqlesi (Temnospondyli: Cochleosauridae), and the Edopoid Colonization of Gondwana JS Steyer, R Damiani, CA Sidor, FR O'Keefe, HCE Larsson, A Maga, ... Journal of Vertebrate Paleontology 26 (1), 18-28, 2006 | 61 | 2006 |
| Cranial anatomy of Morturneria seymourensis from Antarctica, and the evolution of filter feeding in plesiosaurs of the Austral Late Cretaceous FR O'Keefe, RA Otero, S Soto-Acuņa, JP O'gorman, SJ Godfrey, ... Journal of vertebrate Paleontology 37 (4), e1347570, 2017 | 60 | 2017 |
| Cranial anatomy and taxonomy of Dolichorhynchops bonneri new combination, a polycotylid (Sauropterygia: Plesiosauria) from the Pierre Shale of Wyoming and … FR O'keefe Journal of Vertebrate Paleontology 28 (3), 664-676, 2008 | 59 | 2008 |
| Ecological determinants of clinal morphological variation in the cranium of the North American gray wolf FR O'Keefe, J Meachen, EV Fet, A Brannick Journal of Mammalogy 94 (6), 1223-1236, 2013 | 53 | 2013 |
| Ecomorphology of plesiosaur flipper geometry FR O'Keefe Journal of Evolutionary Biology 14 (6), 987-991, 2001 | 51 | 2001 |
| Preliminary report on the osteology and relationships of a new aberrant cryptocleidoid plesiosaur from the Sundance Formation, Wyoming FR O’Keefe, W Wahl Jr | 46 | 2003 |
