We know that there were tinier creatures living alongside the giant dinosaurs, but we don't see many fossils of them.Why is our fossil record so disproportionately full of larger species?Once you find your worksheet, just click on the Open in new window bar on the bottom of the worksheet to print or download. Read through these Fun facts on fossils and find the biggest, oldest, longest fossils ever found!Free 5-day trial This quiz and worksheet will help you evaluate your knowledge of how radiometric dating and index fossils are used in analyzing types of rocks.
When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon 14.
Experts can compare the ratio of carbon 12 to carbon 14 in dead material to the ratio when the organism was alive to estimate the date of its death.
Radiocarbon dating can be used on samples of bone, cloth, wood and plant fibers.
Although most attention in today's world focuses on dinosaurs and why they became extinct, the world of paleontology includes many other interesting organisms which tell us about Earth's past history.
The study of fossils and the exploration of what they tell scientists about past climates and environments on Earth can be an interesting study for students of all ages.