Technical Report NPS/NRPO/NRTR-93/11

Vincent L. Santucci, Editor
vincent_santucci@nps.gov


INTRODUCTION \ 1

Vincent L. Santucci


AGATE FOSSIL BEDS NATIONAL MONUMENT

The Miocene Carnivore Dens of Agate Fossil Beds National Monument, Nebraska: Oldest Known Denning Behavior of Large Mammalian Carnivores \ 5
Robert M. Hunt, Jr.


ALASKA REGION NATIONAL PARKS

A Preliminary Survey of Paleontological Resources from the Alaska Region National Parks \ 11
Vincent L. Santucci, William P. Wall, and Alfred Mead

BADLANDS NATIONAL PARK

The Big Pig Dig of 1993: Discovery, Logistics, and Excavation of Early Oligocene Mammals \ 17
Scott E. Foss

Biomechanical Analysis of Mastication in the Fossil Rodent Ischyromys & It's Bearing on the Origin of Sciuromorphs \ 21
William P. Wall and Sherri J. Hayes

Biomechanical Analysis of Locomotion in the Oligocene Rhinocerotoid Hyracodon \ 29
William P. Wall and Walker Hickerson

Comparison of Feeding Mechanisms in Oligocene Agriochoeridae and Merycoidodontidae from Badlands National Park \ 41
William P. Wall and Michael J. Shikany


BIG BEND NATIONAL PARK

Middle Turonian (Cretaceous) Mosasauroids from Big Bend National Bend National Park, Texas \ 55
Gordon L. Bell

The Paleocene/Eocene Transition on Tornillo Flat in Big Bend National Park, Texas \ 65
Judith A. Schiebout

Early Paleocene (Puercan) Vertebrates of the Dogie Locality, Big Bend National Park, Texas \ 77
Barbara Standhardt

(See Wheeler under Yellowtone National Park)


CANYONLANDS NATIONAL PARK

Crayfish Fossils and Burrows from the Upper Triassic Chinle Formation, Canyonlands National Park, Utah, \ 83
Stephen T. Hasiotis

The Triassic Sinbad Formation and Correlation of the Moenkopi Group, Canyonlands National Park, Utah \ 91
Spencer G. Lucas

Dinosaur Footprint from the Upper Triassic Rockpoint Formation of the Chinle Group, Canyonlands National Park, Utah \ 97
Spencer G. Lucas, Adrian P. Hunt and Martin G. Lockley


FLORISSANT FOSSIL BEDS NATIONAL MONUMENT

(See Wheeler under Yellowstone National Park)


GLEN CANYON NATIONAL RECREATION AREA

New Tracksites from the Moenkopi Formation (Lower-Middle Triassic), Glen Canyon National Recreation Area, Utah \ 101
R.J. Schultz, Martin G. Lockley and Adrian P. Hunt


GRAND CANYON NATIONAL PARK

Climbing Up Sand Dunes in the Permian: New Tracksites from Grand Canyon National Park, Arizona \ 107
Vincent L. Santucci and William P. Wall


JOHN DAY FOSSIL BEDS NATIONAL MONUMENT

Geology of the Late Eocene Clarno Unit, John Day Fossil Beds National Monument, Central Oregon \ 111
Erick A. Bestland, Gregory J. Retallack, and Theodore Fremd

Resolving Blurred Faunas: Biostratigraphy in John Day Fossil Beds National Monument \ 125
T.J. Fremd and Xiaoming Wang


MESA VERDE NATIONAL PARK

A New Principal Reference Section for the Mancos Shale (Late Cretaceous) at Mesa Verde National Park \ 131
James I. Kirkland, R. Mark Leckie, and William P. Elder


PETRIFIED FOREST NATIONAL PARK

Continental Trace Fossils, Petrified Forest National Park: Tools for Paleohydrologic and Paleoecosystem Reconstructions \ 139
Stephen T. Hasiotis and Russell F. Dubiel

Two Late Triassic Vertebrate Faunas at Petrified Forest National Park \ 149
Adrian P. Hunt and Spencer G. Lucas

A Simplified Key to Identifying Isolated Teeth from Late Triassic Rocks in Petrified Forest National Park \ 157
Adrian P. Hunt, Spencer G. Lucas, and Vincent L. Santucci

Late Triassic Vertebrate Taphonomy at Petrified Forest National Park, Arizona \ 163
Adrian P. Hunt, Vincent L. Santucci, and Andrew J. Newell

Revised Upper Triassic Stratigraphy, Petrified Forest National Park, Arizona \ 171
Spencer G. Lucas

Anatomically Preserved Plant Reproductive Structures from the Upper Triassic Chinle Formation in Petrified Forest National Park, Arizona \ 177
Kathleen B. Pigg, William C. Davis, and Sidney Ash

Late Triassic Vertebrate Tracks from Petrified Forest National Park \ 183
Vincent L. Santucci, Adrian P. Hunt, and Martin G. Lockley


YELLOWSTONE NATIONAL PARK

Systematic and Ecologic Significance of Fossil Hardwoods. Examples from Big Bend National Park, Yellowstone National Park, and Florissant Fossil Beds National Monument \ 191
Elisabeth A. Wheeler

AFTERWORD \ 201

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