Carnivore; air-breathing aquatic animal; extinct. In reading earth history, these layers would be "read" from bottom to top or oldest to most recent. The letters on the other cards have no significance to the sequencing procedure and should be ignored at this time. Figure 2-A gives some background information on the individual fossils. Cartilage fish; many living species. These major concepts are part of the Denver Earth Science Project's "Paleontology and Dinosaurs" module written for students in grades
Each card represents a particular rock layer with a collection of fossils that are found in that particular rock stratum.
SW Science 10 Unit 6 Relative Dating Worksheet
Use this information to sequence the cards in a vertical stack of fossils in rock strata. Carnivore; air-breathing aquatic animal; extinct. By correlating fossils from various parts of the world, scientists are able to give relative ages to particular strata. Squid-like animal with coiled, chambered shell; related to modern-day Nautilus. If certain fossils are typically found only in a particular rock unit and are found in many places worldwide, they may be useful as index or guide fossils in determining the age of undated strata. 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. Clams and oysters; many living species NAME: