Fossils

Links With the Past in the Plant World

The Coal Measures Amphibia of North America

The Lost Lemuria

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

The Rise and Progress of Palaeontology

The Ultimate Rockhounding Handbook

Snails

Cambrian Ocean World

Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems

African Dinosaurs Unearthed

The Desert Bones

Across Mongolian Plains

A Short History of the Academy of Natural Sciences of Philadelphia

The Ornithosauria

Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

Notes on Collecting and Preserving Natural-History Objects

Australasian Fossils: A Students' Manual of Palaeontology

Fossil Forests of the Yellowstone National Park

The Geologic Story of Palo Duro Canyon

The Geology of D.A.R. State Park, Mt. Philo State Forest Park, Sand Bar State Park