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Western Association of Vertebrate Paleontology Annual Meeting PaleoBios 33 Supplement:1–35, February 11, 2016 WESTERN ASSOCIATION OF VERTEBRATE PALEONTOLOGY ANNUAL MEETING PROGRAM WITH ABSTRACTS ANZA-BORREGO DESERT STATE PARK® Borrego SprIngs, CA FebrUARY 13–14, 2016 Host Committee: Lyndon K Murray and George T Jefferson Colorado Desert District Stout Research Center Joanne S Ingwall and Myrl Beck Anza-Borrego Desert State Park® Anza-Borrego Desert State Park® Paleontology Society The Anza-Borrego Foundation University of California Irvine Steele/Burnand Anza-Borrego Desert Research Center Citation: Ingwall, J.S., Jefferson, G.T., and Beck, M. (eds.). 2016. Western Association of Vertebrate Paleontology Annual Meeting: Program with Abstracts. PaleoBios 33 Supplement. ucmp_paleobios_30039 Permalink: http://escholarship.org/uc/item/3km3d2wm Copyright: Items in eScholarship are protected by copyright, with all rights reserved, unless otherwise indicated. PALEOBIOS, VOL. 33, SUPPLEMENT, FEBRUARY 2016 ORAL PRESENTATIONS 8:30-8:45 am WELCOME 8:45-9:00 Thomson et al. Potential Research Avenues Provided by Cretaceous, Cedar a Nine-Ton Field Jacket Containing Baby, Mountain Formation Juvenile and Adult Utahraptors (Theropoda; Dromaeosauridae) 9:00-9:15 Gensler Working in Wilderness Areas and Wilderness Cretaceous, Fruitland/ Study Areas: The Removal of Two Pentaceratops Kirtland Formation Partial Skeletons by Helicopter 9:15-9:30 Wedel et al. Pneumatic Diverticula Associated with the Spinal Cretaceous/Paleocene, Cord in Birds, Sauropod Dinosaurs, and Other Cloverly and Black Hills Ornithodiran Archosaurs Formations 9:30-9:45 Scherzer An Archaic Mysticetid from The Vaqueros Oligocene/Miocene, Formation, and Other Fossil Material from The Vaqueros Formation, Skyridge Project, Orange County, CA invertebrates, cetaceans 9:45-10:00 Zhang Deflating The Taxonomic Diversity ofMerycodus Miocene, Valentine and (Family: Antilocapridae) Barstow Formations 10:00-10:30 BREAK AND POSTER VIEWING 10:30-10:45 Bevers The Milk Creek Fauna: a Late Miocene Mammal Miocene, Milk Creek AZ, Site from Central Arizona faunal diversity 10:45-11:00 Sankey et al. Survival of the Tuskiest: Giant, Tusk-Toothed Miocene/Pliocene, Salmon from California west coastal marine vs. freshwater deposits 11:00-11:15 Wagner et al. An Early Pliocene Microtine Rodent from Pliocene, San Joaquin the Lower San Joaquin Formation from Formation, microfossil the Kettleman Hills Facility, Kings County, fauna California 11:15-11:30 Chandler et al. The Terror Bird, Titanis (Phorusrhacidae) from Pliocene, Salton Trough Pliocene Olla Formation, Anza-Borrego Desert State Park, Southern California 11:30-11:45 Gilbert J Tracking the Tracks with Photogrammetry Photogrammetry 11:45-12:00 Molnar Cognitive Bias in Paleontology cognitive bias Noon –2 pm LUNCH AND POSTER VIEWING 2:00-2:15 Murray and Data Improvement: Repairing Data Errors in a repairing data errors in Gilbert L Vertebrate Paleontology Collection paleontology collections 2:15-2:30 Lindsay and Widespread Collagen Radiocarbon Date Quaternary, radiocarbon Stafford Contamination Resolved Through XAD Resin dating contamination Purification 2:30-2:45 Stewart and Pleistocene Paleosol Developed on Ancestral Pleistocene, Mojave Hakel Mojave River Sediments Near Hinkley CA River 2 2016 WAVP PROGRAM & ABSTRACTS 2:45-3:00 Springer et al. The Paleoclimate, Paleohydrology and Vertebrate Pleistocene, Tule Springs Paleontology of Tule Springs Fossil Beds Nationl Fossil Beds National Monument Monument, radioisotope dating 3:00 – 3:30 BREAK AND POSTER VIEWING 3:30-3:45 Demere et al. A Middle Pleistocene Mammoth (Mammuthus Pleistocene, San Diego columbi) from the Coastal Plain of San Diego CA County, California 3:45-4:00 Dooley and How small Are California Mastodons, Really? Pleistocene, North Scott America 4:00-4:15 McDonald Eremotherium Bones and the Cenote of Doom: Pleistocene, Belize New Pleistocene Records from Belize cenotes 4:15-4:30 Murray et al. A New Fossil Assemblage in the Anza-Borrego Pleistocene, Carrizo Desert Badlands in the Anza- Borrego Desert 4:30-4:45 CLOSING REMARKS SELECTION OF 2017 WAVP VENUE POSTER PRESENTATIONS Poster # 1 Homidan and Late Eocene Ischyromids from Pipestone Springs, Eocene, Pipestone Lofgren Montana Springs Main Pocket 2 Jamal and Dental Pathology in Hoplophoneus occidentalis Oligocene, Brule Farke (Nimravidae) Formation, 3 Senise and A Proboscidean Trackway from the Barstow Miocene, Barstow Farke Formation of Southern California Formation, photogrammetry 4 Chu et al. Reinterpretation of Felid Footprints from the Miocene, Barstow Barstow Formation (Miocene) of Southern Formation, California photogrammetry 5 Weideman et Paleontology of Arizona and the Milk Creek Miocene, Mill Creek AZ, al. Fossils analysis of vertebrate taxa 6 Wilson et al. Depositional Environments of the Turlock Miocene/Pliocene, Lake Paleoflora, Upper Mehrten Formation Turlock Lake CA, (Mio-Pliocene), Northern San Joaquin Valley, Mehrten Formation, California paleoflora 7 Borce et al. Intraspecific Variation in Cranial And Pliocene, San Diego Mandibular Morphology of the Extinct River Formation Dolphin Parapontoporia sternbergi from the Upper Pliocene San Diego Formation, Southern California 3 PALEOBIOS, VOL. 33, SUPPLEMENT, FEBRUARY 2016 8 Potapova The Taphonomy of the Avian Remains in the Pleistocene, Matuzka Northwestern Caucasus, Russia, and the Late Cave Russia Pleistocene (Mis 4-2) Environmental Changes 9 Potapova Taphonomy of the Bird Remains from the Pleistocene, Medvezhya Postglacial Horizons of the Medvezhya Cave in Cave in Russia the Northern Urals, Russia 10 Friedman et al. The Irvingtonian Type Locality (Alameda County Pleistocene, Irvingtonian, California), a Historical Perspective San Francisco Bay, fossil collection history, Boy Paleontologists of Hayward 11 Glenister and New Rancholabrean Mammal Fossil Site from Pleistocene, Walker Warm Springs District, Fremont, California Rancholabrean, Warm Springs District of CA 12 Fox and Blois Preliminary Analysis of Small Mammal Fossils Pleistocene, Rancho from “Project 23” at Rancho La Brea, Los La Brea, plant, pollen, Angeles CA microfauna 13 Rowland and Age Profile of Terminal Pleistocene Columbian Pleistocene, Tule Springs Parry Mammoths from the Tule Springs Fossil Beds of Fossil Beds, Mammuthus Southern Nevada columbi, teeth 14 Jackson- North America Research Group (NARG) North America Research Shannon Group 4 2016 WAVP PROGRAM & ABSTRACTS THE MILK CREEK FAUNA: A LATE MIOCENE of these characters are quantified by the following 15 skull MAMMAL SITE FROM CENTRAL ARIZONA measurements: left and right zygomatic process length, BEVERS, Jeb, Department of Biology, Yavapai College, neurocranium width and length, left and right temporal Prescott, AZ, USA fossa width, left and right temporal fossa height, left and The Milk Creek fossil site (late Miocene) of Yavapai right orbital length, width of rostrum at base, rostrum County, Arizona was first announced by Reed (1950) length, zygomatic width, width of rostrum at midpoint, from a joint collecting expedition between the Museum and total length. Measurements were taken on each of the of Northern Arizona and the University of Arizona. After 16 specimens. For each of the skull measurements, means a brief hiatus, ongoing collections of the Milk Creek site and standard deviations were calculated for P. sternbergi have continued to the present time. The largest of these (n=3) and P. blainvillei (n=13). From these data, coef- holdings is in the Frick Collections of fossil mammals held ficients of variation (CV) were calculated for each skull at the American Museum of Natural History. Most of the measurement. Relatively high CV values for neurocranium other collections are in regional museums across Arizona. length and both temporal fossae heights in P. sternbergi A recent examination of these collections permitted a could suggest that the fossil sample contains more than more comprehensive description of the known diversity one species. However, relatively similar CV values for of the Milk Creek mammal assemblage. This examination the remaining skull measurements would argue against also located two previously unreported taxa from the site, this. Left and right side skull differences in CV values in including a canid Leptocyon sp. and a large camelid distinct the fossil sample suggest the possibility of greater cranial from the two more common camelids from the genera asymmetry in P. sternbergi. Michenia and Protolabis. A current analysis of the Milk Creek fauna diversity is presented. THE TERROR BIRD, TITANIS (PHORUSRHACI- DAE), FROM PLIOCENE OLLA FORMATION, INTRASPECIFIC VARIATION IN CRANIAL AND ANZA-BORREGO DESERT STATE PARK®, MANDIBULAR MORPHOLOGY OF THE EX- SOUTHERN CALIFORNIA TINCT RIVER DOLPHIN PARAPONTOPORIA CHANDLER, Robert M., JEFFERSON, George T., LINDSAY, STERNBERGI FROM THE UPPER PLIOCENE SAN Lowell, and VESCERA, Susan P., Colorado Desert District Stout Research Center, Borrego Springs, CA, USA DIEGO FORMATION, SOUTHERN CALIFORNIA BORCE, Bridget, San Diego State University, San Diego, CA, During the Great American Biotic Interchange that took USA; DEMÉRÉ, Thomas A., San Diego Museum Of Natural place after the formation of the Panamanian Land Bridge History, San Diego, CA, USA; BERTA, Annalisa, San Diego during the mid-Pliocene, Titanis walleri (family Phorus- State University, San Diego, CA, USA rhacidae, known as terror birds) entered southern-most Parapontoporia sternbergi is an extinct species of river North America. Specimens of the 2 m-tall, 150 kg flightless dolphin. It has been distinguished
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