Timothy Michael Ryan

    • 2011 Citations
    • 27 h-Index
    19992020
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    Research Output 1999 2020

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    Article
    2020
    1 Citation (Scopus)

    Trabecular Bone Structure in the Distal Femur of Humans, Apes, and Baboons

    Sukhdeo, S., Parsons, J., Niu, X. M. & Ryan, T. M., Jan 1 2020, In : Anatomical Record. 303, 1, p. 129-149 21 p.

    Research output: Contribution to journalArticle

    Papio
    Hominidae
    Pongidae
    femur
    Femur
    2019
    2 Citations (Scopus)

    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

    Ethiopia
    Hominidae
    Skull
    Temporal Bone
    Maxilla
    2 Citations (Scopus)

    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
    Ethmoid Bone
    Cerebrospinal fluid
    Cerebrospinal Fluid
    Olfactory Nerve
    Brain

    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., Jan 1 2019, (Accepted/In press) In : Journal of Anatomy.

    Research output: Contribution to journalArticle

    Calcaneus
    human development
    Bone Development
    infants
    gait

    Comparative description and taxonomy of new hominin juvenile mandibles from the Pliocene of Woranso-Mille (Central Afar, Ethiopia)

    Haile-Selassie, Y. & Ryan, T. M., Jul 1 2019, In : Journal of Human Evolution. 132, p. 15-31 17 p.

    Research output: Contribution to journalArticle

    Ethiopia
    taxonomy
    Pliocene
    possession
    Tanzania
    1 Citation (Scopus)

    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

    skull
    cave
    Pleistocene
    climate
    tooth

    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

    Phosphotungstic Acid
    X-Ray Microtomography
    Staining and Labeling
    Cartilage
    Age Groups

    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., Jan 1 2019, (Accepted/In press) In : American Journal of Physical Anthropology.

    Research output: Contribution to journalArticle

    Talus
    subsistence economy
    cultural behavior
    post-industrial society
    environmental factors
    1 Citation (Scopus)

    Trabecular bone structure scales allometrically in the foot of four human groups

    Saers, J. P. P., Ryan, T. M. & Stock, J. T., Oct 2019, In : Journal of Human Evolution. 135, 102654.

    Research output: Contribution to journalArticle

    bone
    scaling
    bones
    allometry
    body size
    2018
    4 Citations (Scopus)

    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

    humerus
    Humerus
    bone
    asymmetry
    bones
    3 Citations (Scopus)

    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

    Humerus
    Femur
    Population
    Group
    Thigh
    13 Citations (Scopus)

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

    Ryan, T. M., Carlson, K. J., Gordon, A. D., Jablonski, N. G., Shaw, C. N. & Stock, J. T., Aug 1 2018, In : Journal of Human Evolution. 121, p. 12-24 13 p.

    Research output: Contribution to journalArticle

    hips
    bone
    bones
    Pongidae
    thighs

    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

    scaling
    experiment
    human error
    quantification
    archaeology
    4 Citations (Scopus)

    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

    Sex Characteristics
    Foot
    Fossils
    Talus
    Calcaneus
    2017
    3 Citations (Scopus)

    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

    knees
    tibia
    Homo
    fossil
    fossils
    9 Citations (Scopus)
    Craniofacial Dysostosis
    Acrocephalosyndactylia
    Skull
    Craniosynostoses
    Brain
    2016

    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

    redescriptions
    rocks
    sand
    lakes
    lake
    25 Citations (Scopus)

    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

    limbs (animal)
    limb
    bone
    bones
    fossils
    2015
    24 Citations (Scopus)

    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

    locomotion
    bone
    tibia
    life history
    bones
    3 Citations (Scopus)

    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, Jr., J. R. & Madsen, H., Jan 1 2015, In : Biological Control. 80, p. 156-159 4 p.

    Research output: Contribution to journalArticle

    Mylopharyngodon piceus
    Cyprinidae
    Pisces
    hardness
    teeth
    75 Citations (Scopus)
    Skeleton
    Primates
    Bone and Bones
    Population
    Femur
    53 Citations (Scopus)

    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

    Ethiopia
    Hominidae
    Eastern Africa
    Fossils
    Jaw
    2013
    32 Citations (Scopus)

    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

    Diaphyses
    thighs
    Thigh
    bone
    bones
    50 Citations (Scopus)

    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

    humerus
    Humerus
    Body Size
    femur
    primate
    2012
    62 Citations (Scopus)
    Haplorhini
    Anatomy
    Thigh
    Humeral Head
    Extremities
    33 Citations (Scopus)

    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

    Semicircular Canals
    locomotion
    Canals
    Locomotion
    primate
    53 Citations (Scopus)

    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

    human behavior
    Primates
    Haplorhini
    Bone
    Humeral Head
    2011
    17 Citations (Scopus)

    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

    Cebidae
    Callithrix
    Callitrichidae
    Primates
    teeth
    22 Citations (Scopus)

    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

    Fossils
    Hominidae
    Nutrition
    fossils
    fossil
    2010
    29 Citations (Scopus)

    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

    Egypt
    Primates
    Tooth
    Haplorhini
    Strepsirhini
    42 Citations (Scopus)

    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

    Receptor, Fibroblast Growth Factor, Type 2
    Acrocephalosyndactylia
    Skull
    Sutures
    Parturition
    44 Citations (Scopus)

    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

    hominid
    metatarsus
    Hominidae
    Pongidae
    bone
    56 Citations (Scopus)

    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

    Humeral Head
    thighs
    Thigh
    primate
    Primates
    19 Citations (Scopus)

    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

    Mandibular Condyle
    Primates
    Callithrix
    Saimiri
    Mandible
    2009
    25 Citations (Scopus)

    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

    Semicircular Canals
    X Ray Computed Tomography
    intraspecific variation
    computed tomography
    tomography
    68 Citations (Scopus)

    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

    primate
    canal
    locomotion
    Primates
    mammal
    2008
    17 Citations (Scopus)

    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

    Skull
    Jaw
    Tooth
    Lemur
    Madagascar
    13 Citations (Scopus)

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

    Jeffery, N., Ryan, T. M. & Spoor, F., Jan 1 2008, In : Journal of Human Evolution. 55, 2, p. 326-339 14 p.

    Research output: Contribution to journalArticle

    interspecific variation
    primate
    canal
    Primates
    regression
    45 Citations (Scopus)

    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

    reconstruction
    Madagascar
    body weight
    evidence
    2007
    12 Citations (Scopus)

    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

    Carnian
    gliding
    tetrapod
    paleontology
    reptile
    39 Citations (Scopus)

    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

    Catarrhini
    Skull
    Haplorhini
    X-Ray Microtomography
    Crowns
    15 Citations (Scopus)

    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

    Down syndrome
    Aneuploidy
    Down Syndrome
    microstructure
    bone
    28 Citations (Scopus)

    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

    dentition
    Oligocene
    Eocene
    stem
    Miocene
    174 Citations (Scopus)

    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

    Semicircular Canals
    Locomotion
    Primates
    Vertebrates
    Head
    2006
    23 Citations (Scopus)

    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

    mandible (bone)
    Callithrix jacchus
    jaws
    bone
    bones
    19 Citations (Scopus)
    farm
    Computed Tomography
    Arrow
    Chert
    Illinois
    58 Citations (Scopus)

    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

    Anisotropy
    Hominidae
    Sample Size
    Bone and Bones
    visualization
    91 Citations (Scopus)

    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

    ontogeny
    femur
    bone
    bones
    anisotropy
    2005
    46 Citations (Scopus)

    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

    Egypt
    Crowns
    Strepsirhini
    Bicuspid
    Primates
    55 Citations (Scopus)

    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

    Hip Joint
    thighs
    Thigh
    hips
    Primates