Changing Paleoclimates and Mass Extinctions part of SERC Web Resource Collection

This article provides a model for climatic change and relates climatic cycles with major extinction events in the history of the Earth. It discusses the mechanisms behind modern climate zones ...

The Asteroid Impact vs. Volcano Greenhouse Dinosaur Extinction Debate part of SERC Web Resource Collection

This paper discusses two theories of dinosaur extinction, and how Professor McLean's research led to one conclusion. The paper is available in a student version, as well as a science-political ...

Tracking the Course of Evolution: Extinction part of SERC Web Resource Collection

This essay on mass extinction events (Ordovician, Devonian, Permian, Triassic, Cretaceous) in the geologic record is a chapter from History of Life, a book written by Richard Cowen, in which he ...

Extinction part of SERC Web Resource Collection

This site discusses and defines a number of extinction concepts and provides a survey of some important extinction and extinction-like events, primarily from the Phanerozoic. There is information ...

The Cretaceous Period part of SERC Web Resource Collection

This resource discusses notable facts about the Cretaceous Period, the last portion of the "Age of Dinosaurs". The site covers Ceratopsians, such as the Tricerotops. It includes sections on ...

Are Birds Really Dinosaurs? part of SERC Web Resource Collection

Evidence presented on this site is overwhelmingly in favor of birds being the descendants of a maniraptoran dinosaur, probably something similar (but not identical) to a small dromaeosaur. Dr. ...

Introduction to Pterasauria: The Flying Reptiles part of SERC Web Resource Collection

This site is a general introduction to pterosaurs. Ranging from the size of a sparrow to the size of an airplane, the pterosaurs (Greek for "wing lizards") ruled the skies in the Jurassic ...

Ornithomimidae (Bird Mimics): The Ostrich-Like Dinosaurs part of SERC Web Resource Collection

This site describes the Ornithomimids, a distinctive group of theropod dinosaurs who show a good example of convergent evolution with the ratite birds, such as ostriches. They were not as closely ...

Walking With Dinosaurs part of SERC Web Resource Collection

Part of the British Broadcasting Corporation (BBC) learning series, this website contains dinosaur information, games, interviews with scientists, and virtual tours. The Chronology section discusses ...

Bacteria: Fossil Record part of SERC Web Resource Collection

This description of the fossil record of bacteria focuses on one particular group of bacteria, the cyanobacteria or blue-green algae, which have left a fossil record that extends far back into the ...