Bulletin no. 8

Dr. Robert D. McCord and Debra Boaz, eds.

Bulletin no. 8 was produced following the 2001 combined meeting of the Western Association of Vertebrate Paleontologists (WAVP) and the Southwest Paleontological Society (SPS) hosted by the Mesa Southwest Museum. The scope of papers and abstracts in this volume reflects the breadth of paleontological research undertaken in the western . 143 pages.

Western Association of Vertebrate Paleontologists with Mesa Southwest Museum and Southwest Paleontological Society: First Meeting of the New Millenium Proceedings volume

Mesa Southwest Museum Bulletin No. 8

Table of Contents

In Search of Clues: Solving the Mystery of a 375 Million Year Old Mass‐Kill

Heidemarie G. Johnson

An Update on New Reptile Material from the Holbrook Member, Upper Moenkopi Formation, Northern

Sterling Nesbitt

Stratigraphy, Biostratigraphy and Biochronology of Lower Chinle Group (Adamanian: Latest Carnian) Vertebrate Assemblages in the Vicinity of St. Johns, Arizona

Andrew B. Heckert, and Spencer G. Lucas

A Germanic‐Aspect Phytosaur from the Upper Sonsela Sandstone (Chinle Group: Petrified Forest Formation), Petrified Forest, Arizona

Adrian P. Hunt, Spencer G. Lucas and Andrew B. Heckert

An Enigmatic Aetosaur Specimen from the Upper Triassic Dockum Formation of Texas

William G. Parker

New Specimens of Dilophosaurus wetherilli (Dinosauria: Theropoda) from the Early Kayenta Formation of Northern Arizona

Robert Gay

Protosuchid Crocodylomorphs from the Lower Jurassic Navajo Sandstone of North‐Central Arizona

L. F. Rinehard, A. B. Heckert, S. G. Lucas, G. Bryant, and R. Cushman

The Demise of Dystylosaurus edwini and a Revision of Supersaurus vivianae

Brian Curtice and Ken Stadtman

The Pectoral Girdle of the Sauropod Dinosaur Apatosaurus

Philip R. Platt

The Relative Abundance of the Sauropoda (Dinosauria, Saurischia) of the Morrison Formation and Implications for late Jurassic Paleoecology of North America

John R. Foster

A Preliminary Report of New from the Schellenberger Canyon Formation (Upper Lower ) of Southern Arizona, USA

Gregory P. Cranwell

Age and Correlation of Cretaceous Fossil Vertebrates from Southeastern Arizona

Spencer G. Lucas and Andrew B. Heckert

Vertebrate Localities and Assemblages of the Bisbee Group of Southern Arizona

John‐Paul Hodnett

Preliminary Statistical Characterization of a Zuniceratops Bone Bed from the Middle Cretaceous (Turonian) Moreno Hill Formation

Douglas G. Wolfe, Steve Beekman, Dan Mcguiness and Thomas Robira

Ongoing Research in the Late Cretaceous Fort Crittenden Formation, Southeastern Arizona

Robert Mccord, Gavin Mccullough, Robert Scarborough, and B. J. Tegowski

Dinosaur Nesting Site in the Maastrichtian North Horn Formation, Central Utah

Rose Difley

New Records of Plesiosauria from the Cretaceous of Southern Utah

L. Barry Albright, David D. Gillette, Alan L. Titus and Merle H. Graffam

Investigating the Correlation of Stratigraphy and Fossil Taxa in the Fort Crittenden Fauna using GIS

Erin Schirtzinger

“Aublysodon” Teeth from the El Gallo Fm. (Late Campanian) of Baja California: The Southernmost Record of Tyrannosaurid Theropods

Tracy L. Ford and D. J. Chure

Patterns of Mammalian Evolution across the Cretaceous‐Tertiary Boundary

William A. Clemens

The Earliest Known Echolocating Toothed Whales (Mammalia: Odontceti): Preliminary Observations of Fossils from Washington State.

Lawrence G. Barnes, James L. Goedert and Hitoshi Furusawa

Naticid Valve Preference and Species Selectivity on Plio‐Pleistocene Mollusks

Kathleen Mcfadden, Jeffrey G. Agnew and Carol M. Tang

A Robust Wolverine (Plesiogulo?) from Northeastern Utah

Larry D. Agenbroad and Chauncie Todd

Recent Discoveries at the 111 Ranch Fossil Locality, Safford, AZ

Andria L. Skaff

New Fossil Records from the Blancan 111 Ranch Beds, Graham County, Arizona: Results of Cooperative Efforts by a Federal Agency, Public and Private Museums, and the Amateur Community

Robert Mccord, Lawrence Thrasher, Richard White, B.J. Tegowski, Andria Skaff, Gavin McCullough, and Erin Schirtzinger.

Bison and Late Pleistocene Megafauna from the Mojave Desert

Eric Scott and Shelley M. Cox

Equine Navicular Syndrome: A Historical Perspective on a Modern Problem

Mary E. T. Flint, Lennart C. Ostblom and Gregory H. McDonald

Paleopathology of a Specimen of the Latest Miocene “Pseudo‐Walrus”, Gomphotaria pugnax from Coastal Southern California.

Lawrence G. Barnes, Howell W. Thomas and Rodney E. Raschke

The Importance of Landfills on Paleontology and the Need for Expediting the Removal of Fossils

Jacques Grabe