Timothy Michael Ryan

    • 2028 Citations
    • 27 h-Index
    19992020

    Research output per year

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    Research Output

    Article

    A 3.8-million-year-old hominin cranium from Woranso-Mille, Ethiopia

    Haile-Selassie, Y., Melillo, S. M., Vazzana, A., Benazzi, S. & Ryan, T. M., Sep 12 2019, In : Nature. 573, 7773, p. 214-219 6 p.

    Research output: Contribution to journalArticle

    3 Scopus citations

    Additional remains of Wadilemur elegans, a primitive stem galagid from the late Eocene of Egypt

    Seiffert, E. R., Simons, E. L., Ryan, T. M. & Attia, Y., Aug 9 2005, In : Proceedings of the National Academy of Sciences of the United States of America. 102, 32, p. 11396-11401 6 p.

    Research output: Contribution to journalArticle

    46 Scopus citations

    A fossil primate of uncertain affinities from the earliest late eocene of Egypt

    Seiffert, E. R., Simons, E. L., Boyer, D. M., Perry, J. M. G., Ryan, T. M. & Sallam, H. M., May 25 2010, In : Proceedings of the National Academy of Sciences of the United States of America. 107, 21, p. 9712-9717 6 p.

    Research output: Contribution to journalArticle

    29 Scopus citations

    Analysis of intraindividual and intraspecific variation in semicircular canal dimensions using high-resolution X-ray computed tomography

    Welker, K. L., Orkin, J. D. & Ryan, T. M., Oct 1 2009, In : Journal of Anatomy. 215, 4, p. 444-451 8 p.

    Research output: Contribution to journalArticle

    25 Scopus citations

    Anatomical basis and physiological role of cerebrospinal fluid transport through the murine cribriform plate

    Norwood, J. N., Zhang, Q., Card, D., Craine, A., Ryan, T. M. & Drew, P. J., May 2019, In : eLife. 8, e44278.

    Research output: Contribution to journalArticle

    Open Access
    2 Scopus citations

    A new gliding tetrapod (Diapsida: ?archosauromorpha) from the upper triassic (Carnian) of Virginia

    Fraser, N. C., Olsen, P. E., Dooley, J. C. & Ryan, T. M., Jun 12 2007, In : Journal of Vertebrate Paleontology. 27, 2, p. 261-265 5 p.

    Research output: Contribution to journalArticle

    12 Scopus citations

    Angular orientation of trabecular bone in the femoral head and its relationship to hip joint loads in leaping primates

    Ryan, T. M. & Ketcham, R. A., Sep 1 2005, In : Journal of Morphology. 265, 3, p. 249-263 15 p.

    Research output: Contribution to journalArticle

    55 Scopus citations

    An ontogenetic framework linking locomotion and trabecular bone architecture with applications for reconstructing hominin life history

    Raichlen, D. A., Gordon, A. D., Foster, A. D., Webber, J. T., Sukhdeo, S. M., Scott, R. S., Gosman, J. H. & Ryan, T. M., Apr 1 2015, In : Journal of Human Evolution. 81, p. 1-12 12 p.

    Research output: Contribution to journalArticle

    24 Scopus citations

    A reconstruction of the Vienna skull of Hadropithecus stenognathus

    Ryan, T. M., Burney, D. A., Godfrey, L. R., Göhlich, U. B., Jungers, W. L., Vasey, N., Ramilisonina, Walker, A. & Weber, G. W., Aug 5 2008, In : Proceedings of the National Academy of Sciences of the United States of America. 105, 31, p. 10699-10702 4 p.

    Research output: Contribution to journalArticle

    17 Scopus citations

    A remarkable female cranium of the early Oligocene anthropoid Aegyptopithecus zeuxis (Catarrhini, Propliopithecidae)

    Simons, E. L., Seiffert, E. R., Ryan, T. M. & Attia, Y., May 22 2007, In : Proceedings of the National Academy of Sciences of the United States of America. 104, 21, p. 8731-8736 6 p.

    Research output: Contribution to journalArticle

    39 Scopus citations

    Assessing the accuracy of high-resolution X-ray computed tomography of primate trabecular bone by comparisons with histological sections

    Fajardo, R. J., Ryan, T. M. & Kappelman, J., Apr 27 2002, In : American Journal of Physical Anthropology. 118, 1, p. 1-10 10 p.

    Research output: Contribution to journalArticle

    94 Scopus citations

    Asymmetry in the Cortical and Trabecular Bone of the Human Humerus During Development

    Perchalski, B., Placke, A., Sukhdeo, S. M., Shaw, C. N., Gosman, J. H., Raichlen, D. A. & Ryan, T. M., Jun 2018, In : Anatomical Record. 301, 6, p. 1012-1025 14 p.

    Research output: Contribution to journalArticle

    4 Scopus citations

    Baby steps towards linking calcaneal trabecular bone ontogeny and the development of bipedal human gait

    Saers, J. P. P., Ryan, T. M. & Stock, J. T., Mar 1 2020, In : Journal of Anatomy. 236, 3, p. 474-492 19 p.

    Research output: Contribution to journalArticle

    Beyond the closed suture in apert syndrome mouse models: Evidence of primary effects of FGFR2 signaling on facial shape at birth

    Martínez-Abadías, N., Percival, C., Aldridge, K., Hill, C. A., Ryan, T., Sirivunnabood, S., Wang, Y., Jabs, E. W. & Richtsmeier, J. T., Nov 1 2010, In : Developmental Dynamics. 239, 11, p. 3058-3071 14 p.

    Research output: Contribution to journalArticle

    42 Scopus citations

    Comparative forefoot trabecular bone architecture in extant hominids

    Griffin, N. L., D'Août, K., Ryan, T. M., Richmond, B. G., Ketcham, R. A. & Postnov, A., Aug 2010, In : Journal of Human Evolution. 59, 2, p. 202-213 12 p.

    Research output: Contribution to journalArticle

    44 Scopus citations

    Complex variation of trabecular bone structure in the proximal humerus and femur of five modern human populations

    Doershuk, L. J., Saers, J. P. P., Shaw, C. N., Jashashvili, T., Carlson, K. J., Stock, J. T. & Ryan, T. M., Jan 2018, In : American Journal of Physical Anthropology. 168, 1, p. 104-118 15 p.

    Research output: Contribution to journalArticle

    3 Scopus citations

    Cross-sectional bone distribution in the mandibles of gouging and non-gouging platyrrhini

    Vinyard, C. J. & Ryan, T. M., Oct 1 2006, In : International Journal of Primatology. 27, 5, p. 1461-1490 30 p.

    Research output: Contribution to journalArticle

    23 Scopus citations

    Development of Cortical Bone Geometry in the Human Femoral and Tibial Diaphysis

    Gosman, J. H., Hubbell, Z. R., Shaw, C. N. & Ryan, T. M., May 1 2013, In : Anatomical Record. 296, 5, p. 774-787 14 p.

    Research output: Contribution to journalArticle

    34 Scopus citations

    Does hardness of food affect the development of pharyngeal teeth of the black carp, Mylopharyngodon piceus (Pisces: Cyprinidae)?

    Hung, N. M., Ryan, T. M., Stauffer, J. R. & Madsen, H., Jan 1 2015, In : Biological Control. 80, p. 156-159 4 p.

    Research output: Contribution to journalArticle

    3 Scopus citations
    63 Scopus citations

    Evolution of locomotion in anthropoidea: The semicircular canal evidence

    Ryan, T. M., Silcox, M. T., Walker, A., Mao, X., Begun, D. R., Benefit, B. R., Gingerich, P. D., Koöhler, M., Kordos, L., McCrossin, M. L., Moyà-Solà, S., Sanders, W. J., Seiffert, E. R., Simons, E., Zalmout, I. S. & Spoor, F., Jan 1 2012, In : Proceedings of the Royal Society B: Biological Sciences. 279, 1742, p. 3467-3475 9 p.

    Research output: Contribution to journalArticle

    33 Scopus citations

    Evolution of the hominin knee and ankle

    Frelat, M. A., Shaw, C. N., Sukhdeo, S., Hublin, J. J., Benazzi, S. & Ryan, T. M., Jul 2017, In : Journal of Human Evolution. 108, p. 147-160 14 p.

    Research output: Contribution to journalArticle

    4 Scopus citations

    Exploring sexual dimorphism of the modern human talus through geometric morphometric methods

    Sorrentino, R., Belcastro, M. G., Figus, C., Stephens, N. B., Turley, K., Harcourt-Smith, W., Ryan, T. M. & Benazzi, S., Jan 1 2020, In : PloS one. 15, 2, e0229255.

    Research output: Contribution to journalArticle

    Open Access

    Femoral head trabecular bone structure in two omomyid primates

    Ryan, T. M. & Ketcham, R. A., Jan 1 2002, In : Journal of Human Evolution. 43, 2, p. 241-263 23 p.

    Research output: Contribution to journalArticle

    75 Scopus citations
    76 Scopus citations

    Human-like hip joint loading in Australopithecus africanus and Paranthropus robustus

    Ryan, T. M., Carlson, K. J., Gordon, A. D., Jablonski, N., Shaw, C. N. & Stock, J. T., Aug 2018, In : Journal of Human Evolution. 121, p. 12-24 13 p.

    Research output: Contribution to journalArticle

    13 Scopus citations
    10 Scopus citations

    Juvenile Pleistocene tapir skull from Russells Reserve Cave, Bath County, Virginia: Implications for cold climate adaptations

    Graham, R. W., Grady, F. & Ryan, T. M., Oct 2019, In : Quaternary International. 530-531, p. 35-41 7 p.

    Research output: Contribution to journalArticle

    1 Scopus citations
    44 Scopus citations

    Microstructure of trabecular bone in a mouse model for down syndrome

    Parsons, T., Ryan, T. M., Reeves, R. H. & Richtsmeier, J. T., Apr 1 2007, In : Anatomical Record. 290, 4, p. 414-421 8 p.

    Research output: Contribution to journalArticle

    15 Scopus citations

    New remains of eocene and oligocene afrosoricida (Afrotheria) from Egypt, with implications for the origin(s) of afrosoricid zalambdodonty

    Seiffert, E. R., Simons, E. L., Ryan, T. M., Bown, T. M. & Attia, Y., Dec 12 2007, In : Journal of Vertebrate Paleontology. 27, 4, p. 963-972 10 p.

    Research output: Contribution to journalArticle

    28 Scopus citations

    New species from Ethiopia further expands Middle Pliocene hominin diversity

    Haile-Selassie, Y., Gibert, L., Melillo, S. M., Ryan, T. M., Alene, M., Deino, A., Levin, N. E., Scott, G. & Saylor, B. Z., May 27 2015, In : Nature. 521, 7553, p. 483-488 6 p.

    Research output: Contribution to journalArticle

    55 Scopus citations

    Oligocene mammals from Ethiopia and faunal exchange between Afro-Arabia and Eurasia

    Kappelman, J., Rasmussen, D. T., Sanders, W. J., Feseha, M., Bown, T., Copeland, P., Crabaugh, J., Fleagle, J., Glantz, M., Gordon, A., Jacobs, B., Maga, M., Muldoon, K., Pan, A., Pyne, L., Richmond, B., Ryan, T., Seiffert, E. R., Sen, S., Todd, L. & 2 others, Wiemann, M. C. & Winkler, A., Dec 4 2003, In : Nature. 426, 6966, p. 549-552 4 p.

    Research output: Contribution to journalArticle

    95 Scopus citations
    20 Scopus citations

    Phosphotungstic acid-enhanced microCT: Optimized protocols for embryonic and early postnatal mice

    Lesciotto, K. M., Motch Perrine, S. M., Kawasaki, M., Stecko, T., Ryan, T. M., Kawasaki, K. & Richtsmeier, J. T., Jan 1 2019, (Accepted/In press) In : Developmental Dynamics.

    Research output: Contribution to journalArticle

    Preliminary observations on the calcaneal trabecular microarchitecture of extant large-bodied hominoids

    Maga, M., Kappelman, J., Ryan, T. M. & Ketcham, R. A., Mar 1 2006, In : American Journal of Physical Anthropology. 129, 3, p. 410-417 8 p.

    Research output: Contribution to journalArticle

    59 Scopus citations

    Quantification and visualization of anisotropy in trabecular bone

    Ketcham, R. A. & Ryan, T. M., Feb 1 2004, In : Journal of Microscopy. 213, 2, p. 158-171 14 p.

    Research output: Contribution to journalArticle

    118 Scopus citations

    Redescription of Pseudotropheus livingstonii and Pseudotropheus elegans from Lake Malaŵi, Africa

    Stauffer, J. R., Konings, A. F. & Ryan, T. M., Aug 19 2016, In : Zootaxa. 4154, 2, p. 169-178 10 p.

    Research output: Contribution to journalArticle

    SCALING UP, SCALING DOWN: EXPERIMENTS WITH HIGH RESOLUTION COMPUTED TOMOGRAPHY SCANNING OF MICROARTEFACTS

    Peacock, E. & Ryan, T. M., Dec 1 2018, In : Acta Archaeologica. 89, 1, p. 193-206 14 p.

    Research output: Contribution to journalArticle

    Semicircular canal system in early primates

    Silcox, M. T., Bloch, J. I., Boyer, D. M., Godinot, M., Ryan, T. M., Spoor, F. & Walker, A., Mar 2009, In : Journal of Human Evolution. 56, 3, p. 315-327 13 p.

    Research output: Contribution to journalArticle

    69 Scopus citations

    The functional morphology of the anterior masticatory apparatus in tree-gouging marmosets (cebidae, primates)

    Hogg, R. T., Ravosa, M. J., Ryan, T. M. & Vinyard, C. J., Jul 1 2011, In : Journal of Morphology. 272, 7, p. 833-849 17 p.

    Research output: Contribution to journalArticle

    17 Scopus citations

    The hadropithecus conundrum reconsidered, with implications for interpreting diet in fossil hominins

    Dumont, E. R., Ryan, T. M. & Godfrey, L. R., Jan 1 2011, In : Proceedings of the Royal Society B: Biological Sciences. 278, 1725, p. 3654-3661 8 p.

    Research output: Contribution to journalArticle

    22 Scopus citations

    The influence of mobility strategy on the modern human talus

    Sorrentino, R., Stephens, N. B., Carlson, K. J., Figus, C., Fiorenza, L., Frost, S., Harcourt-Smith, W., Parr, W., Saers, J., Turley, K., Wroe, S., Belcastro, M. G., Ryan, T. M. & Benazzi, S., Mar 1 2020, In : American Journal of Physical Anthropology. 171, 3, p. 456-469 14 p.

    Research output: Contribution to journalArticle

    1 Scopus citations

    The primate semicircular canal system and locomotion

    Spoor, F., Garland, T., Krovitz, G., Ryan, T. M., Silcox, M. T. & Walker, A., Jun 26 2007, In : Proceedings of the National Academy of Sciences of the United States of America. 104, 26, p. 10808-10812 5 p.

    Research output: Contribution to journalArticle

    180 Scopus citations

    The primate subarcuate fossa and its relationship to the semicircular canals part II: Adult interspecific variation

    Jeffery, N., Ryan, T. M. & Spoor, F., Aug 2008, In : Journal of Human Evolution. 55, 2, p. 326-339 14 p.

    Research output: Contribution to journalArticle

    13 Scopus citations

    The semicircular canal system and locomotion: The case of extinct lemuroids and lorisoids

    Walker, A., Ryan, T. M., Silcox, M. T., Simons, E. L. & Spoor, F., May 1 2008, In : Evolutionary Anthropology. 17, 3, p. 135-145 11 p.

    Research output: Contribution to journalArticle

    45 Scopus citations

    The three-dimensional structure of trabecular bone in the femoral head of strepsirrhine primates

    Ryan, T. M. & Ketcham, R. A., Jan 1 2002, In : Journal of Human Evolution. 43, 1, p. 1-26 26 p.

    Research output: Contribution to journalArticle

    101 Scopus citations

    Trabecular bone functional adaptation and sexual dimorphism in the human foot

    Saers, J. P. P., Ryan, T. M. & Stock, J. T., Jan 2018, In : American Journal of Physical Anthropology. 168, 1, p. 154-169 16 p.

    Research output: Contribution to journalArticle

    4 Scopus citations

    Trabecular bone microstructure scales allometrically in the primate humerus and femur

    Ryan, T. M. & Shaw, C. N., May 7 2013, In : Proceedings of the Royal Society B: Biological Sciences. 280, 1758, 20130824.

    Research output: Contribution to journalArticle

    50 Scopus citations