Fossils and Dinosaurs

What’s inside

• What process most commonly preserves the internal structure of fossilized bones by filling their pores with minerals?
• Which combination makes a fossil especially useful as an index fossil?
• According to the law of superposition, which rock layer is generally the oldest in an undisturbed sequence of…
• Which feature provides strong evidence that modern birds evolved from theropod dinosaurs?
• Which of the following is a trace fossil rather than a body fossil?
• Why can amber preserve delicate structures such as insect wings and hairs?
• The fossil record is an exact and complete record of every organism that has ever lived.
• Most dinosaurs lived during the Mesozoic Era.