Meeting Abstract 57.7 Sunday, Jan. 5 15:00 A moving background disrupts station holding in Anna’s hummingbirds GOLLER, B*; ALTSHULER, DL; Univ. of British Columbia, Vancouver, BC goller@zoology.ubc.ca The movement of visual features across the retina, termed optic flow, is an important source of information for control of locomotor behavior in animals. For example, during forward flight the […]
year: 2014
Variation in Placodont tooth morphology and the effects of structure on tooth function
Meeting Abstract 56.2 Sunday, Jan. 5 13:45 Variation in Placodont tooth morphology and the effects of structure on tooth function. CROFTS, S. B.; Univ. of Washington, Seatttle croftss@uw.edu One of the identifying characters of Placodonts, an extinct clade of marine reptiles that lived during the Mesozoic, is the presence of palatal teeth modified to crush hard prey […]
The cranial anatomy of living jawless fishes and the interrelationships of early vertebrates
Meeting Abstract 56.1 Sunday, Jan. 5 13:30 The cranial anatomy of living jawless fishes and the interrelationships of early vertebrates MIYASHITA, T.*; PALMER, A. R.; University of Alberta; University of Alberta tetsuto@ualberta.ca No other structure better characterizes vertebrates than the head, with its massive skull, highly specialized muscles, and intricate innervations by cranial nerves. Did the first […]
Orbit and Scleral Ring Measurements as Predictors of Diving Ecology
Meeting Abstract 56.6 Sunday, Jan. 5 14:45 Orbit and Scleral Ring Measurements as Predictors of Diving Ecology BROWNE, K*; CLARKE, J; University of Texas, Austin; University of Texas, Austin katie.pyon@gmail.com Many birds navigate two optically different media, air and water. A few species, such as penguins (Sphenisciformes) dive to depths approaching the aphotic zone of the ocean […]
Gills, structure, and feeding mode specialization in a remarkably early gnathostome
Meeting Abstract 56.3 Sunday, Jan. 5 14:00 Gills, structure, and feeding mode: specialization in a remarkably early gnathostome CRISWELL, KE*; FINARELLI, JA; COATES, MI; University of Chicago; University College Dublin; University of Chicago kcriswell@uchicago.edu Articulated gill skeletons are rarely preserved in early fossil fishes, leaving gaps in the knowledge of the early evolution of this major structural […]
Digital reconstruction of the skull of Tiktaalik roseae with insights into early tetrapod feeding mechanics
Meeting Abstract 56.4 Sunday, Jan. 5 14:15 Digital reconstruction of the skull of Tiktaalik roseae with insights into early tetrapod feeding mechanics LEMBERG, JB*; ROSS, CF; SHUBIN, NH; DAESCHLER, EB; University of Chicago; University of Chicago; University of Chicago; Academy of Natural Sciences of Drexel Univ. lemberg@uchicago.edu Recent studies of the feeding mechanics of early tetrapods have […]
Cranial musculoskeletal development in the holosteans Amia calva and Lepisosteus oculatus
Meeting Abstract 56.5 Sunday, Jan. 5 14:30 Cranial musculoskeletal development in the holosteans Amia calva and Lepisosteus oculatus. DAVIS, M.C.*; CASS, A.N.; SCHEIDT, D.C.; MCCUNE, A.R.; Kennesaw State University; Cornell University; Kennesaw State University; Cornell University mdavi144@kennesaw.edu The pattern of cranial and pharyngeal musculoskeletal development has been extensively studied in tetrapods and in the derived actinopterygians (teleosts). […]
Can we predict mandibular kinematics from patterns of EMG activity in primates
Meeting Abstract 56.7 Sunday, Jan. 5 15:00 Can we predict mandibular kinematics from patterns of EMG activity in primates? IRIARTE-DIAZ, J.*; ROSS, C.F.; Univ. of Chicago; Univ. of Chicago josdiiri@gmail.com The muscular system that controls mandible movement in mammals is highly redundant and morphologically complex. For example, for a particular mandibular motion, there are multiple ways that […]
Using impression fossils and 3D tomography to investigate the role of oxygen in insect evolution
Meeting Abstract 55.4 Sunday, Jan. 5 14:15 Using impression fossils and 3D tomography to investigate the role of oxygen in insect evolution VANDENBROOKS, JM*; HARRISON, JF; Arizona State University; Arizona State University jvandenb@asu.edu Changes in atmospheric oxygen levels have been hypothesized to have driven evolutionary changes in insect body size, including Paleozoic gigantism. However, the fact that […]
Salt and the Rough-skinned Newt Investigations of Adaptation to a Natural and Anthropogenic Stressor
Meeting Abstract 55.6 Sunday, Jan. 5 14:45 Salt and the Rough-skinned Newt: Investigations of Adaptation to a Natural and Anthropogenic Stressor HOPKINS, G.R.*; BRODIE, JR., E.D.; FRENCH, S.S.; Utah State University; Utah State University; Utah State University gareth.hopkins@usu.edu Amphibians are osmotically sensitive organisms, and tolerance of saline environments is rare (some coastal species have adapted to natural […]
