Limb kinematics during locomotion in the two-toed sloth (Choloepus didactylus, Xenarthra) and its implications for the evolution of the sloth locomotor apparatus.

[1]  E. Hirasaki,et al.  Gaits of Japanese macaques (Macaca fuscata) on a horizontal ladder and arboreal stability. , 2009, American journal of physical anthropology.

[2]  S. Pääbo,et al.  Nuclear Gene Sequences from a Late Pleistocene Sloth Coprolite , 2003, Current Biology.

[3]  D. Bramble,et al.  Functional vertebrate morphology , 1985 .

[4]  J. Vilensky,et al.  Squirrel monkey locomotion on an inclined treadmill: Implications for the evolution of gaits , 1994 .

[5]  R. Hackert,et al.  Steady locomotion in dogs: temporal and associated spatial coordination patterns and the effect of speed , 2008, Journal of Experimental Biology.

[6]  R. Stein,et al.  Identification, Localization, and Modulation of Neural Networks for Walking in the Mudpuppy (Necturus Maculatus) Spinal Cord , 1998, The Journal of Neuroscience.

[7]  D. Carrier,et al.  Locomotor function of forelimb protractor and retractor muscles of dogs: evidence of strut-like behavior at the shoulder , 2008, Journal of Experimental Biology.

[8]  M. Illert,et al.  Kinematic Analysis of the Cat Shoulder Girdle during Treadmill Locomotion: an X‐ray Study , 1996, The European journal of neuroscience.

[9]  E. Simons,et al.  Phylogenetic and functional affinities of Babakotia (primates), a fossil lemur from northern Madagascar. , 1991, Proceedings of the National Academy of Sciences of the United States of America.

[10]  R. Blickhan,et al.  The tri-segmented limbs of therian mammals: kinematics, dynamics, and self-stabilization--a review. , 2006, Journal of experimental zoology. Part A, Comparative experimental biology.

[11]  Carsten Niemitz,et al.  Gravity, posture and locomotion in primates , 1990 .

[12]  Theodore M Cole,et al.  Technical note: out-of-plane angular correction based on a trigonometric function for use in two-dimensional kinematic studies. , 2006, American journal of physical anthropology.

[13]  L. M. Day,et al.  Interspecific scaling of the morphology and posture of the limbs during the locomotion of cats (Felidae) , 2007, Journal of Experimental Biology.

[14]  Holger Preuschoft,et al.  What does "arboreal locomotion" mean exactly and what are the relationships between "climbing", environment and morphology? , 2002, Zeitschrift fur Morphologie und Anthropologie.

[15]  M. S. Fischer,et al.  APPLICATION OF CINERADIOGRAPHY FOR THE METRIC AND KINEMATIC STUDY OF IN-PHASE GAITS DURING LOCOMOTION OF THE PIKA (OCHOTONA RUFESCENS, MAMMALIA : LAGO MORPHA) , 1998 .

[16]  Hui Zhong,et al.  Kinematic and EMG determinants in quadrupedal locomotion of a non-human primate (Rhesus). , 2005, Journal of neurophysiology.

[17]  Manuela Schmidt,et al.  Forelimb proportions and kinematics: how are small primates different from other small mammals? , 2005, Journal of Experimental Biology.

[18]  M. Hildebrand.  Analysis of Asymmetrical Gaits , 1977 .

[19]  L. Werdelin,et al.  A peculiar climbing Megalonychidae from the Pleistocene of Peru and its implication for sloth history , 2007 .

[20]  M. Fischer,et al.  Kinematic analysis of treadmill locomotion of Tree shrews, Tupaia glis (Scandentia: Tupaiidae) , 1999 .

[21]  Reinhard Blickhan,et al.  Stable operation of an elastic three-segment leg , 2001, Biological Cybernetics.

[22]  A. R. Lammers,et al.  Mechanics of torque generation during quadrupedal arboreal locomotion. , 2008, Journal of biomechanics.

[23]  F. Mendel,et al.  The hand of two ‐toed sloths (Choloepus): Its anatomy and potential uses relative to size of support , 1981, Journal of morphology.

[24]  N. Stevens,et al.  Stability, limb coordination and substrate type: the ecorelevance of gait sequence pattern in primates. , 2006, Journal of experimental zoology. Part A, Comparative experimental biology.

[25]  B. Demes,et al.  Symmetrical gaits of Cebus apella: implications for the functional significance of diagonal sequence gait in primates. , 2008, Journal of human evolution.

[26]  F. Mendel,et al.  Foot of two‐toed sloths: Its anatomy and potential uses relative to size of support , 1981, Journal of morphology.

[27]  Daniel Schmitt,et al.  Understanding the adaptive value of diagonal-sequence gaits in primates: a comment on Shapiro and Raichlen, 2005. , 2007, American journal of physical anthropology.

[28]  S. Miller,et al.  Movements of the forelimbs of the cat during stepping on a treadmill , 1975, Brain Research.

[29]  F. Multon,et al.  Primate locomotion : linking field and laboratory research , 2011 .

[30]  Alan M. Wilson,et al.  Gait characterisation and classification in horses , 2007, Journal of Experimental Biology.

[31]  Martin S. Fischer,et al.  Mechanical self-stabilization, a working hypothesis for the study of the evolution of body proportions in terrestrial mammals? , 2006 .

[32]  J. Iles,et al.  Hindlimb muscle activity during locomotion in the rat (Rattus norvegicus) (Rodentia: Muridae) , 2009 .

[33]  M. Goffart.  Function and form in the sloth , 1971 .

[34]  D. Carrier,et al.  Locomotor function of the pectoral girdle `muscular sling' in trotting dogs , 2006, Journal of Experimental Biology.

[35]  M. Fischer,et al.  Evolution of chameleon locomotion, or how to become arboreal as a reptile. , 2010, Zoology.

[36]  M. Superina.  The Biology of the Xenarthra , 2006 .

[37]  S. Renous,et al.  Limb joints kinematics and their relation to increasing speed in the guinea pig Cavia porcellus (Mammalia: Rodentia) , 2005 .

[38]  C. Pennycuick.  On the running of the gnu (Connochaetes taurinus) and other animals , 1975 .

[39]  P. Lemelin,et al.  Origins of primate locomotion: gait mechanics of the woolly opossum. , 2002, American journal of physical anthropology.

[40]  S. Larson,et al.  Humeral retractor EMG during quadrupedal walking in primates , 2007, Journal of Experimental Biology.

[41]  F. Mendel,et al.  The wrist joint of two‐toed sloths and its relevance to brachiating adaptations in the hominoidea , 1979, Journal of morphology.

[42]  S. Pääbo,et al.  A molecular phylogeny of two extinct sloths. , 2001, Molecular phylogenetics and evolution.

[43]  F. Mendel,et al.  Use of Hands and Feet of Two-Toed Sloths (Choloepus hoffmanni) during Climbing and Terrestrial Locomotion , 1981 .

[44]  A response to Cartmill et al.: Primate gaits and arboreal stability , 2007 .

[45]  J. Vilensky.  Gait characteristics of two macaques, with emphasis on relationships with speed. , 1983, American journal of physical anthropology.

[46]  J. Manter.  The Dynamics Of Quadrupedal Walking , 1938 .

[47]  Ruth A. Miller.  Functional Adaptations in the Forelimb of the Sloths , 1935 .

[48]  Daniel Schmitt,et al.  Compliant walking in primates , 1999 .

[49]  J. Young,et al.  Body mass distribution and gait mechanics in fat-tailed dwarf lemurs (Cheirogaleus medius) and patas monkeys (Erythrocebus patas). , 2007, Journal of human evolution.

[50]  M. Fischer,et al.  Basic limb kinematics of small therian mammals. , 2002, The Journal of experimental biology.

[51]  G. E. Goslow,et al.  Electrical activity and relative length changes of dog limb muscles as a function of speed and gait. , 1981, The Journal of experimental biology.

[52]  E. Simons,et al.  Phalangeal curvature and positional behavior in extinct sloth lemurs (Primates, Palaeopropithecidae). , 1997, Proceedings of the National Academy of Sciences of the United States of America.

[53]  G. E. Goslow,et al.  The cat step cycle: Hind limb joint angles and muscle lengths during unrestrained locomotion , 1973, Journal of morphology.

[54]  Manuela Schmidt,et al.  Scapula Movements and Their Contribution to Three-Dimensional Forelimb Excursions in Quadrupedal Primates , 2011 .

[55]  N. Schilling,et al.  Function of the extrinsic hindlimb muscles in trotting dogs , 2009, Journal of Experimental Biology.

[56]  M. Fischer,et al.  Gait parameter adjustments of cotton-top tamarins (Saguinus oedipus, Callitrichidae) to locomotion on inclined arboreal substrates. , 2008, American journal of physical anthropology.

[57]  F. Mendel,et al.  Use of Hands and Feet of Three-Toed Sloths (Bradypus variegatus) during Climbing and Terrestrial Locomotion , 1985 .

[58]  Mamoru Tomita,et al.  A Study on the Movement Pattern of Four Limbs in Walking [1] , 1967 .

[59]  Eadweard Muybridge,et al.  Animals in Motion , 1957 .

[60]  T. Gaudin.  Phylogenetic relationships among sloths (Mammalia, Xenarthra, Tardigrada): the craniodental evidence , 2004 .

[61]  J. Hutchinson,et al.  The locomotor kinematics of Asian and African elephants: changes with speed and size , 2006, Journal of Experimental Biology.

[62]  Farish A. Jenkins,et al.  Hip structure and locomotion in ambulatory and cursorial carnivores , 2009 .

[63]  W. Weijs,et al.  The functional anatomy of the shoulder in the Virginia opossum (Didelphis virginiana) , 2009 .

[64]  J. Denoix,et al.  Correlation between Surface Electromyography and Kinematics of the Hindlimb of Horses at Trot on a Treadmill , 1999, Cells Tissues Organs.

[65]  S. Larson,et al.  Shoulder motion during quadrupedal walking in Cercopithecus aethiops: Integration of cineradiographic and electromyographic data , 1994 .

[66]  G. E. Goslow,et al.  The functional anatomy of the shoulder of the savannah monitor lizard (Varanus exanthematicus) , 1983, Journal of morphology.

[67]  Alexander N. Kuznetsov,et al.  Energetical profit of the third segment in parasagittal legs , 1995 .

[68]  J. Vilensky,et al.  PRIMATE LOCOMOTION: Utilization and Control of Symmetrical Gaits , 1989 .

[69]  M. Fischer,et al.  Morphological Integration in Mammalian Limb Proportions: Dissociation between Function and Development , 2009, Evolution; international journal of organic evolution.

[70]  W. J. Loughry,et al.  The biology of the Xenarthra , 2008 .

[71]  P. A. Pridmore.  Locomotion in Dromiciops-Australis (Marsupialia, Microbiotheriidae) , 1994 .

[72]  G E Goslow,et al.  The cat step cycle: Electromyographic patterns for hindlimb muscles during posture and unrestrained locomotion , 1978, Journal of morphology.

[73]  G. Montgomery,et al.  Edentates. (Book Reviews: The Evolution and Ecology of Armadillos, Sloths, and Vermilinguas) , 1985 .

[74]  S. W. Britton,et al.  Form and Function in the Sloth , 1941, The Quarterly Review of Biology.

[75]  S. Pääbo,et al.  Molecular phylogeny of the extinct ground sloth Mylodon darwinii. , 1996, Proceedings of the National Academy of Sciences of the United States of America.

[76]  S. Renous,et al.  Comparison of the fore and hind limbs kinematics in the symmetrical and asymmetrical gaits of a caviomorph rodent, the domestic guinea pig, Cavia porcellus (Linné, 1758) (Rodentia, Caviidae) , 1996 .

[77]  W. Beebe.  The three-toed sloth Bradypus cuculliger cuculliger Wagler , 1926 .

[78]  M. Hildebrand.  Symmetrical gaits of primates , 1967 .

[79]  M. Stanhope,et al.  The evolution of armadillos, anteaters and sloths depicted by nuclear and mitochondrial phylogenies: implications for the status of the enigmatic fossil Eurotamandua , 2001, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[80]  Jean-Pierre Gasc,et al.  Asymmetrical gait of the Saharian rodent Meriones shawi shawi (Duvernoy, 1842) (Rodentia, Mammalia): a high-speed cineradiographic analysis , 1993 .

[81]  Jennifer L. White.  Indicators of locomotor habits in xenarthrans: Evidence for locomotor heterogeneity among fossil sloths , 1993 .

[82]  N. Heglund,et al.  Speed, stride frequency and energy cost per stride: how do they change with body size and gait? , 1988, The Journal of experimental biology.

[83]  Sabine Renous,et al.  Symmetrical and asymmetrical gaits in the mouse: patterns to increase velocity , 2004, Journal of Comparative Physiology A.

[84]  G. B. Wislocki.  Observations on the gross and microscopic anatomy of the sloths (Bradypus griseus griseus Gray and Choloepus hoffmanni Peters) , 1928 .

[85]  M. Fischer.  Crouched posture and high fulcrum, a principle in the locomotion of small mammals: The example of the rock hyrax (Procavia capensis) (Mammalia: Hyracoidea) , 1994 .

[86]  M. Cartmill,et al.  Support polygons and symmetrical gaits in mammals , 2002 .