University of California
Ucmp: The Triassic Period, 245 to 208 Million Years Ago
A brief overview of the Triassic Period, along with links to more detailed information on its subdivisions and life forms. Also includes information about subdivisions of the Period, along with Stratigraphy, Localities, and Tectonics.
Other
Who Dunnit to the Dinosaurs?
"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...
Science Struck
Science Struck: The Meaning of Index Fossils Explained
Explains the importance of index fossils for the dating and chronology of events in the fossil and geological records. Discusses uses and examples of index fossils in the Cenozoic, Mesozoic, and Paleozoic Eras.
University of California
Ucmp: Web Geological Time Machine
The Museum of Paleontology at Berkeley offers an online geological time machine which allows you to catch a glimpse of ancient eras in earth's history. Click into an "Era" to learn about its stratigraphy, life forms, localities, and...
Other
Encyclopedia of Arkansas: Geography and Geology
An overview of the geography and geology covering the landscape of what is now the state of Arkansas.Both have had important influences on the history and cultural development of Arkansas.
Carnegie Museum of Natural History
Carnegie Museum of Natural History: Online Exhibitions
A collection of exhibits that can be found online allowing students to research the museums' artifacts and displays. Exhibits include earth science and dinosaurs topics.
Australian Broadcasting Corporation
Australian Broadcasting Corporation: Walking With Dinosaurs: Fact Files: Didelphodon
Read about the Didelphodon, a marsupial from the Mesozoic era and Cretaceous period. Learn what fossils have taught us about their habitat, diet, and senses, and view an animated image showing how this mammal may have moved.
CK-12 Foundation
Ck 12: Biology: Evolution of Multicellular Life Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the evolution of multicellular life.
Other
Arkansas Geologic Survey: Geologic History of Arkansas
An overview of the different geologic time periods and how each affected the area of what is now the state of Arkansas.
San Diego Natural History Museum
San Diego Natural History Museum: Dinosaur Dig
The San Diego Natural History Museum provides dinosaur lovers with plenty of information and fun facts with links to Finding Fossils and Dinosaur Bytes.
American Museum of Natural History
American Museum of Natural History: Kryptobaatar O Logy Card
Flip this interactive OLogy card to find questions and answers, fast facts, and other bite-size pieces of information to help you understand important characteristics of the Kryptobaatar, a prehistoric mammal.
American Museum of Natural History
American Museum of Natural History: Cretaceous Period O Logy Card
Flip this interactive card to start learning about the Cretaceous Period. Answer multiple-choice and fact-or-fiction questions and review some fast facts about this period that marked the end of the line for all non-avian dinosaurs.
Curated OER
Who Dunnit to the Dinosaurs?
"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...
ClassFlow
Class Flow: The Earth's History
[Free Registration/Login Required] This flipchart is a lesson on the geologic history of the Earth. It covers the four main eras of the geologic time scale: Precambrian, Paleozoic, Mesozoic, and Cenozoic. Characteristics of each era are...
Other
Western Oregon University: Earth System Science: Geologic Time [Pdf]
An 81-page slideshow that looks at the principles of geology with respect to relative dating, at different concepts describing geological processes, at absolute age and radiometric dating, at the eons and eras in the geologic time scale,...
Mocomi & Anibrain Digital Technologies
Mocomi: Dinosaur Facts and Information
Read a brief history of dinosaurs and how fossils are formed. Learn about the three main dinosaur periods, plant-eating dinosaurs, meat-eating dinosaurs, the end of dinosaurs, and other interesting facts.
University of California
University of California Museum of Paleontology: Geology and Geologic Time
This site provides information about the geologic relationships of rock layers, as well as much about geologic time and the history of Earth.
ClassFlow
Class Flow: Life & Geologic Time
[Free Registration/Login Required] This Flipchart accompanies chapter 14 in the Glencoe Earth Science text. The flipchart contains pictures that help students learn about Geologic time: Paleozoic, Mesozoic, Cenozoic and explains...