2009 Portland GSA Annual Meeting (18-21 October 2009)

Session No. 265
Wednesday, 21 October 2009: 1:30 PM-5:30 PM
Portland Ballroom 255 (Oregon Convention Center)

Paleontology: Development & Morphology

 

Andrew Webber and Holly A. Schreiber, Chairs
Paper #
Start Time
1
1:30 PM
HOW PLASTIC IS VENDOBIONTA MORPHOLOGY? A GEOMETRIC MORPHOMETRIC STUDY OF TWO GROUPS OF PTERIDINIUM FROM THE LATEST NEOPROTEROZOIC
MEYER, Michael, Department of Geology, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 and HARRIES, Peter J., Department of Geology, University of South Florida, 4202 E. Fowler Ave., SCA 528, Tampa, FL 33620, mike.meyer.geo@gmail.com, mike.meyer.geo@gmail.com
2
1:45 PM
ONTOGENY AND ASEXUAL REPRODUCTION OF DISCOIDAL EDIACARAN ORGANISMS: WHY SO MANY DISCS BUT SO FEW WITH FRONDS?
XIAO, Shuhai1, BYKOVA, Natasha2, GRAZHDANKIN, Dmitri2, KAUFMAN, Alan J.3, NAGOVITSIN, Konstantin2, KOCHNEV, Boris2, PEEK, Sara3 and ROGOV, Vladimir2, (1)Department of Geosciences, Virginia Polytechnic Institute and State University, 4044 Derring Hall, Blacksburg, VA 24061, (2)Russian Academy of Science, Novosibirsk Branch, Institute of Geology of Petroleum and Gas, Novosibirsk, 630090, Russia, (3)Geology Department, University of Maryland, College Park, MD 20742, xiao@vt.edu, xiao@vt.edu
3
2:00 PM
CAMBROTHYRA AMPULLIFORMIS, AN UNUSUAL COELOSCLERITOPHORAN FROM THE LOWER CAMBRIAN OF SHAANXI PROVINCE, CHINA
MOORE, John L., Department of Earth Science, University of California, Santa Barbara, Santa Barbara, CA 93106, PORTER, Susannah M., Earth Science, University of California at Santa Barbara, Santa Barbara, CA 93106, STEINER, Michael, Freie Universität Berlin, Malteserstraße 74-100, Berlin, 12249, Germany and LI, Guoxiang, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China, jlmoore@umail.ucsb.edu, jlmoore@umail.ucsb.edu
4
2:15 PM
THEORETICAL DEVELOPMENTAL MORPHOLOGY AND MORPHOSPACE OCCUPANCY. AN EXAMPLE WITH TRILOBITE CRANIDIA
GERBER, Sylvain, Department of Biology and Biochemistry, The University of Bath, Claverton Down, Bath, BA2 7AY, England and HOPKINS, Melanie J., Department of Geophysical Sciences, University of Chicago, 5734 S. Ellis Ave, Chicago, IL 60637, s.gerber@bath.ac.uk, s.gerber@bath.ac.uk
5
2:30 PM
METABOLIC RATE SCALING OF THE TRILOBITE ELDREDGEOPS RANA
DEPTOLA, Travis J., Department of Geosciences, The Pennsylvania State University, University Park, PA 16802, POWELL, Matthew G., Department of Geology, Juniata College, 1700 Moore St, Huntingdon, PA 16652 and GLAZIER, Douglas S., Department of Biology, Juniata College, 1700 Moore St, Huntingdon, PA 16652, deptotx05@juniata.edu, deptotx05@juniata.edu
6
2:45 PM
EVOLUTIONARY LABILITY OF INTEGRATION IN CAMBRIAN PTYCHOPARIOID TRILOBITES
WEBSTER, Mark, Dept. of Geophysical Sciences, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637 and ZELDITCH, Miriam L., Museum of Paleontology, Univ of Michigan, 1109 Geddes Road, Ann Arbor, MI 48109, mwebster@geosci.uchicago.edu, mwebster@geosci.uchicago.edu
7
3:00 PM
MORPHOLOGIC CONSTRAINTS AND THE RISE OF THE MYELODACTYLIDS; A REEXAMINATION OF EARLY PALEOZOIC CRINOID DISPARITY
DELINE, Bradley, Department of Geosciences, University of West Georgia, 1601 Maple St, Carrollton, GA 30118 and AUSICH, William, School of Earth Sciences, Ohio State University, 155 S Oval Mall, Columbus, OH 43210-1398, bdeline@westga.edu, bdeline@westga.edu
8
3:15 PM
A NEW VIEW OF RHENOPYRGID EDRIOASTEROIDS – EVIDENCE FROM THE SILURIAN OF ARGENTINA
SUMRALL, C.D., Department of Earth and Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996, HEREDIA, Susana, CONICET, Instituto de Investigaciones Mineras, Universidad de San Juan, San Juan, 5400, Argentina and RODRÍGUEZ, Cecilia M., CONICET - IANIGLA (CRICYT), Mendoza, 5500, Argentina, csumrall@utk.edu, csumrall@utk.edu
9
3:30 PM
MORPHOLOGICAL VARIABILITY WITHIN AND BETWEEN TWO RECENT RHYNCHONELLIDE (BRACHIOPODA) SPECIES AS MODELED BY ELLIPTICAL FOURIER ANALYSIS
SCHREIBER, Holly A.1, CARLSON, Sandra J.1, FITZGERALD, Paul C.2 and ROOPNARINE, Peter D.3, (1)Department of Geology, University of California, Davis, One Shields Ave, Davis, CA 95616, (2)Department of Biology, Northern Virginia Community College, 8333 Little River Turnpike, Annandale, VA 22003, (3)Invertebrate Zoology & Geology, California Academy of Sciences, 55 Concourse Dr, Golden Gate Park, San Francisco, CA 94118, haschultz@ucdavis.edu, haschultz@ucdavis.edu
 
3:45 PM
Break
10
4:00 PM
THE ROLE OF GEOGRAPHIC VARIATION IN INTERPRETING STRATIGRAPHIC PATTERNS OF MORPHOLOGICAL CHANGE
WEBBER, Andrew and HUNDA, Brenda R., Collections and Research, Cincinnati Museum Center, 1301 Western Avenue, Cincinnati, OH 45203, webbera1@nku.edu, webbera1@nku.edu
 
4:15 PM
Break
11
4:30 PM
HETEROCHRONY IN THE CENOZOIC TURRITELLINE GASTROPODS OF NEW ZEALAND
SMITH, Ursula E., Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY 14853, ues4@cornell.edu, ues4@cornell.edu
12
4:45 PM
THE SAILING PEFORMANCE OF THE CRESTED PTERODACTYLOID TAPEJARA FROM THE EARLY CRETACEOUS OF BRAZIL
CHATTERJEE, Sankar, Geosciences, Texas Tech Univ, MS Box 41053, Lubbock, TX 79409-3191, ALEXANDER, David E., Ecology & Evolutionary Biology, University of Kansas, 2041 Haworth Hall, 1200 Sunnyside Avenue, Lawrence, KS 66045, LIND, Richard, Mechanical & Aerospace Engineering, 231 Aerospace Building, Gainesville, FL 32611 and GEDEON, Andy, Museum, Texas Tech University, Lubbock, TX 79409, sankar.chatterjee@ttu.edu, sankar.chatterjee@ttu.edu
13
5:00 PM
MORPHOMETRICS AND SYSTEMATICS OF HYOPSODUS (MAMMALIA, CONDYLARTHRA) FROM THE WASATCHIAN AND BRIDGERIAN EOCENE OF THE GREEN RIVER BASIN, WYOMING
ADAMS, John K.1, BARTELS, William S.1 and GUNNELL, Gregg F.2, (1)Department of Geological Sciences, Albion College, Albion, MI 49224, (2)Division of Fossil Primates, Duke Lemur Center, Duke University, Durham, NC 27705, jkendalladams@uchicago.edu, jkendalladams@uchicago.edu
14
5:15 PM
A RE-EXAMINATION OF CONCHOSTRACANS AS MODEL FOSSIL TAXA: AN INTEGRATED BIOLOGICAL AND PALEONTOLOGICAL APPROACH
ASTROP, Timothy I., Geology, University of Akron, Aubern Science and Engineering Center, Akron, OH 44325-3908, PARK, Lisa, Geology and Environmental Science, University of Akron, 302 Buchtel Ave, Akron, OH 44325 and WEEKS, Stephen C., Biology, University of Akron, Aubern Science and Engineering Center, Akron, OH 44325-3908, tia10@uakron.edu, tia10@uakron.edu