Utah Education Network
Uen: Trb 4:4 Investigation 6 Dinosaur Extinction
Research and analyze theories on why dinosaurs became extinct.
Howard Hughes Medical Institute
Hhmi: Bio Interactive: Article: "The Day the Mesozoic Died"
A short article by Dr. Sean B. Carroll detailing the discoveries covered in the film The Day The Mesozoic Died.
Indiana University
Indiana Univ. Bloomington: Geo Notes: Dinosaur Fossils Not Found in Indiana [Pdf]
Discusses the mass extinction event that wiped out many prehistoric animals 65 million years ago and why there are no dinosaur fossils to be found in Indiana.