Timothy Michael Ryan

    • 2028 Citations
    • 27 h-Index
    19992020

    Research output per year

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    Research Output

    1999

    e-Skeletons®: The digital library as a platform for studying anatomical form and function

    Kappelman, J., Ryan, T. & Zylstra, M., Sep 1 1999, In : D-Lib Magazine. 5, 9, p. 5-16 12 p.

    Research output: Contribution to journalReview article

    2002

    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

    93 Scopus citations

    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

    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
    2003

    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
    2004

    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
    2005

    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

    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
    44 Scopus citations
    2006

    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
    19 Scopus citations

    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

    58 Scopus citations

    Trabecular bone ontogeny in the human proximal femur

    Ryan, T. M. & Krovitz, G. E., Jan 1 2006, In : Journal of Human Evolution. 51, 6, p. 591-602 12 p.

    Research output: Contribution to journalArticle

    91 Scopus citations
    2007

    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

    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

    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

    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

    179 Scopus citations
    2008

    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

    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
    2009

    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

    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
    2010

    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

    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

    Erratum to "Semicircular canal system in early primates"[J. H. Evol. 56 (2009) 315-327] (DOI:10.1016/j.jhevol.2008.10.007)

    Silcox, M. T., Bloch, J. I., Boyer, D. M., Godinot, M., Ryan, T. M., Spoor, F. & Walker, A., Jan 1 2010, In : Journal of Human Evolution. 58, 3, p. 279-280 2 p.

    Research output: Contribution to journalComment/debate

    Trabecular bone structure in the humeral and femoral heads of anthropoid primates

    Ryan, T. M. & Walker, A., Apr 1 2010, In : Anatomical Record. 293, 4, p. 719-729 11 p.

    Research output: Contribution to journalArticle

    56 Scopus citations

    Trabecular bone structure in the mandibular condyles of gouging and nongouging platyrrhine primates

    Ryan, T. M., Colbert, M., Ketcham, R. A. & Vinyard, C. J., Jan 1 2010, In : American Journal of Physical Anthropology. 141, 4, p. 583-593 11 p.

    Research output: Contribution to journalArticle

    19 Scopus citations
    2011

    Are we looking for loads in all the right places? New research directions for studying the masticatory apparatus of New World monkeys

    Vinyard, C. J., Taylor, A. B., Teaford, M. F., Glander, K. E., Ravosa, M. J., Rossie, J. B., Ryan, T. M. & Williams, S. H., Dec 1 2011, In : Anatomical Record. 294, 12, p. 2140-2157 18 p.

    Research output: Contribution to journalReview article

    13 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
    2012

    Addressing ownership, access and participation needs in scientific collaboration

    Rosson, M. B., Li, N., Ryan, T. & Tapia, A. H., Jan 1 2012, Proceedings of the 2012 iConference: Culture, Design, Society, iConference 2012. Association for Computing Machinery, p. 271-278 8 p. (ACM International Conference Proceeding Series).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    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

    Unique suites of trabecular bone features characterize locomotor behavior in human and non-human anthropoid primates

    Ryan, T. M. & Shaw, C. N., Jul 18 2012, In : PloS one. 7, 7, e41037.

    Research output: Contribution to journalArticle

    53 Scopus citations
    2013

    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

    Periosteal versus true cross-sectional geometry: A comparison along humeral, femoral, and tibial diaphyses

    MacIntosh, A. A., Davies, T. G., Ryan, T. M., Shaw, C. N. & Stock, J. T., Mar 1 2013, In : American Journal of Physical Anthropology. 150, 3, p. 442-452 11 p.

    Research output: Contribution to journalReview article

    33 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
    2014

    Does the distribution and variation in cortical bone along lower limb diaphyses reflect selection for locomotor economy?

    Shaw, C. N., Stock, J. T., Davies, T. G. & Ryan, T. M., Apr 1 2014, Reconstructing Mobility: Environmental, Behavioral, and Morphological Determinants. Springer US, p. 49-66 18 p.

    Research output: Chapter in Book/Report/Conference proceedingChapter

    11 Scopus citations
    2015

    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

    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
    75 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

    53 Scopus citations
    2016

    KSD-VP-1/1: Analysis of the Postcranial Skeleton Using High-Resolution Computed Tomography

    Ryan, T. M. & Sukhdeo, S., Jan 1 2016, Vertebrate Paleobiology and Paleoanthropology. 9789401774277 ed. Springer, p. 39-62 24 p. (Vertebrate Paleobiology and Paleoanthropology; no. 9789401774277).

    Research output: Chapter in Book/Report/Conference proceedingChapter

    10 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

    Trabecular bone structural variation throughout the human lower limb

    Saers, J. P. P., Cazorla-Bak, Y., Shaw, C. N., Stock, J. T. & Ryan, T. M., Aug 1 2016, In : Journal of Human Evolution. 97, p. 97-108 12 p.

    Research output: Contribution to journalArticle

    25 Scopus citations
    2017

    Corrigendum to “Dentognathic remains of Australopithecus afarensis from Nefuraytu (Woranso-Mille, Ethiopia): Comparative description, geology, and paleoecological context” [J Hum Evol 100 (2016) 35–53] ((S0047248416300914)(10.1016/j.jhevol.2016.08.003))

    Haile-Selassie, Y., Melillo, S. M., Ryan, T. M., Levin, N. E., Saylor, B. Z., Deino, A., Mundil, R., Scott, G., Alene, M. & Gibert, L., Jan 1 2017, In : Journal of Human Evolution. 102, 1 p.

    Research output: Contribution to journalComment/debate

    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

    3 Scopus citations
    10 Scopus citations