Smithsonian Institution
National Museum of Natural History: Paleobiology: The Cambrian Period
Journey into the past while reading this comprehensive overview of the Cambrian Period that covers topics such as the Cambrian Explosion, Burgess Shale fauna, trilobites, fossil evidence, and climate and plate tectonics.
Smithsonian Institution
National Museum of Natural History: Paleobiology: The Ordovician Period
Journey into the past while reading this comprehensive overview of the Ordovician Period that covers topics such as reef ecosystems, Paleozoic Fauna, fossil evidence, and climate and plate tectonics.
Smithsonian Institution
National Museum of Natural History: Paleobiology: The Archaean Eon
Journey into the past while reading this comprehensive overview of the Archaean Eon that covers topics such as early continents and oceans, first life on Earth, Earth's atmosphere, fossil evidence, and plate tectonics.
Smithsonian Institution
National Museum of Natural History: Paleobiology: Geologic Time: Hadean Eon
Journey into the past while reading this comprehensive overview of the Hadean Eon that covers topics such as the formation of the earth, its surface and atmosphere, fossil evidence, erosion and plate tectonics.
Smithsonian Institution
National Museum of Natural History: Paleobiology: The Proterozoic Eon
Journey into the past while reading this comprehensive overview of the Proterozoic Eon that covers topics such as the Prokaryotic life, Eukaryotes, glaciation, fauna evidence, and multicellular life forms.
BBC
Bbc Nature: Prehistoric Life: Cretaceous Period
Overview of the Earth in the Cretaceous Period told by photos, news, and external links with an emphasis on what grew and lived then, the causes of mass extinction, types of fossils, and what life was like in general.
Estrella Mountain Community College
Online Biology Book: Paleobiology: The Mesozoic, Age of Cyads and Dinosaurs
The Mesozoic era is the period in which the dinosaurs existed. It encompasses three main geological periods - the Triassic, Jurassic and Cretaceous eras. The evolution of different life forms throughout these eras is described in this...
Other
Prehistoric Planet: Rock Layers: Timeline of Life on Earth
Offers an easy to understand explanation of the earth's layers and the fossils we find in each layer. It explains how these are interpreted by scientists to represent the evolution of animal and plant life through the geological eras.
Other
Georgia Perimeter College: The Mesozoic Era
This resource provides an overview of the Mesozoic era, with details about each period of geological history.
Science Struck
Science Struck: Facts About the Cenozoic Era and Its Life Forms
Describes the different periods, epochs, and stages of the Cenozoic Era and the events that took place in them. Looks at geology and tectonic plate movements, climate, flora and fauna, and the emergence of mammals as the dominant life...
Curated OER
Prehistoric Planet: Rock Layers: Timeline of Life on Earth
Geological eras showing the fossils found in each rock layer.