Search Results - "Christopher Kirk, E."

Visual acuity in mammals: effects of eye size and ecology by Veilleux, Carrie C, Kirk, E Christopher

“…Previous comparative research has attributed interspecific variation in eye size among mammals to selection related to visual acuity. Mammalian species have…”
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Eye shape and the nocturnal bottleneck of mammals by Hall, Margaret I., Kamilar, Jason M., Kirk, E. Christopher

“…Most vertebrate groups exhibit eye shapes that vary predictably with activity pattern. Nocturnal vertebrates typically have large corneas relative to eye size…”
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Skeleton of a Cretaceous mammal from Madagascar reflects long-term insularity by Krause, David W., Hoffmann, Simone, Hu, Yaoming, Wible, John R., Rougier, Guillermo W., Kirk, E. Christopher, Groenke, Joseph R., Rogers, Raymond R., Rossie, James B., Schultz, Julia A., Evans, Alistair R., von Koenigswald, Wighart, Rahantarisoa, Lydia J.

“…The fossil record of mammaliaforms (mammals and their closest relatives) of the Mesozoic era from the southern supercontinent Gondwana is far less extensive…”
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Endocranial volumes of primate species: scaling analyses using a comprehensive and reliable data set by Isler, Karin, Christopher Kirk, E., Miller, Joseph M.A., Albrecht, Gene A., Gelvin, Bruce R., Martin, Robert D.

“…We present a compilation of endocranial volumes (ECV) for 176 non-human primate species based on individual data collected from 3813 museum specimens, at least…”
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Functional implications of ubiquitous semicircular canal non-orthogonality in mammals by Berlin, Jeri C, Kirk, E Christopher, Rowe, Timothy B

“…The 'canonical model' of semicircular canal orientation in mammals assumes that 1) the three ipsilateral canals of an inner ear exist in orthogonal planes…”
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First cranial remains of a gondwanatherian mammal reveal remarkable mosaicism by Krause, David W., Hoffmann, Simone, Wible, John R., Kirk, E. Christopher, Schultz, Julia A., von Koenigswald, Wighart, Groenke, Joseph R., Rossie, James B., O’Connor, Patrick M., Seiffert, Erik R., Dumont, Elizabeth R., Holloway, Waymon L., Rogers, Raymond R., Rahantarisoa, Lydia J., Kemp, Addison D., Andriamialison, Haingoson

“…Previously known only from isolated teeth and lower jaw fragments recovered from the Cretaceous and Palaeogene of the Southern Hemisphere, the Gondwanatheria…”
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A new caimanine alligatorid from the Middle Eocene of Southwest Texas and implications for spatial and temporal shifts in Paleogene crocodyliform diversity by Stocker, Michelle R, Brochu, Christopher A, Kirk, E Christopher

“…Dramatic early Cenozoic climatic shifts resulted in faunal reorganization on a global scale. Among vertebrates, multiple groups of mammals (e.g., adapiform and…”
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New perspectives on anthropoid origins by Williams, Blythe A, Kay, Richard F, Kirk, E. Christopher

“…Adaptive shifts associated with human origins are brought to light as we examine the human fossil record and study our own genome and that of our closest ape…”
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Evolutionary Patterns of Intersexual Power by Lewis, Rebecca J, Kirk, E Christopher, Gosselin-Ildari, Ashley D

“…Dominance and leverage are both possible causes of social inequality. If sexual dimorphism influences patterns of intersexual dominance, we predicted that…”
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Eye Size and Visual Acuity Influence Vestibular Anatomy in Mammals by Kemp, Addison D., Christopher Kirk, E.

“…ABSTRACT The semicircular canals of the inner ear detect head rotations and trigger compensatory movements that stabilize gaze and help maintain visual…”
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Evolution of eye size and shape in primates by Ross, Callum F., Kirk, E. Christopher

“…Strepsirrhine and haplorhine primates exhibit highly derived features of the visual system that distinguish them from most other mammals. Comparative data link…”
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Intrinsic hand proportions of euarchontans and other mammals: Implications for the locomotor behavior of plesiadapiforms by Kirk, E. Christopher, Lemelin, Pierre, Hamrick, Mark W., Boyer, Doug M., Bloch, Jonathan I.

“…Arboreal primates have distinctive intrinsic hand proportions compared with many other mammals. Within Euarchonta, platyrrhines and strepsirrhines have longer…”
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Eye size at birth in prosimian primates: life history correlates and growth patterns by Cummings, Joshua R, Muchlinski, Magdalena N, Kirk, E Christopher, Rehorek, Susan J, DeLeon, Valerie B, Smith, Timothy D

“…Primates have large eyes relative to head size, which profoundly influence the ontogenetic emergence of facial form. However, growth of the primate eye is only…”
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Geochronological and taxonomic revisions of the middle Eocene Whistler Squat Quarry (Devil's Graveyard Formation, Texas) and implications for the early Uintan in Trans-Pecos Texas by Campisano, Christopher J, Kirk, E Christopher, Townsend, K E Beth, Deino, Alan L

“…The Whistler Squat Quarry (TMM 41372) of the lower Devil's Graveyard Formation in Trans-Pecos Texas is a middle Eocene fossil locality attributed to Uintan…”
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Darwinius masillae is a strepsirrhine—a reply to Franzen et al. (2009) by Williams, Blythe A., Kay, Richard F., Christopher Kirk, E., Ross, Callum F.

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Septa and processes: convergent evolution of the orbit in haplorhine primates and strigiform birds by Menegaz, Rachel A., Christopher Kirk, E.

“…According to the “nocturnal visual predation hypothesis” (NVPH), the convergent eyes and orbits of primates result from selection for improved stereoscopic…”
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Eye morphology in cathemeral lemurids and other mammals by Kirk, E Christopher

“…The visual systems of cathemeral mammals are subject to selection pressures that are not encountered by strictly diurnal or nocturnal species. In particular,…”
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Visual acuity in the cathemeral strepsirrhine Eulemur macaco flavifrons by Veilleux, Carrie C., Christopher Kirk, E.

“…Studies of visual acuity in primates have shown that diurnal haplorhines have higher acuity (30–75 cycles per degree (c/deg)) than most other mammals. However,…”
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Osteological evidence for the evolution of activity pattern and visual acuity in primates by Kay, Richard F., Kirk, E. Christopher

“…Examination of orbit size and optic foramen size in living primates reveals two adaptive phenomena. First, as noted by many authors, orbit size is strongly…”
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Euarchontans from Fantasia, an upland middle Eocene locality at the western margin of the Bighorn Basin by Lundeen, Ingrid K., Kirk, E. Christopher

“…The fossil record of North American Eocene mammals is best known from relatively low-elevation ‘basin center’ fossil localities in intermontane depositional…”
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