Paleontology Questions
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The law of _____ is the principal that states that younger rocks lie above older rocks if the layers have not been disturbed
Determining the actual age of an event or object in years is called
An _____ is a break in the geologic record that is made when rock layers are eroded or when sediment is not deposited for a long period of time
Fossils of the same plants and animal species have been found on continents that are separated by the Atlantic Ocean. How is this possible?
An igneous intrusion cuts through three layers of sedimentary rock. Which rock is the youngest?
Sometimes a fossil is formed as a result of the movement of an organism in soft sediment. What type of fossil is this called
Geologic time is divided into specific periods and epochs based on?
What percentage of animals that ever existed are extinct?
Scientists believe that a large asteroid struck Earth approximately 65 million years ago, this caused the extinction of what group of organisms?
What percent of Earth's history was the precambrian period around?
What event occurred earliest in geologic history? Appearance of the earliest grasses, earliest birds, the grenville orogeny, or the intrusion of the palisades sill.
Global climatic changes in geologic history are inferred to be caused by?
The largest meteorite impact crater in North America formed approximately 1,850 million years ago. This occurred during the, Middle Archean Era, Early Proterozoic Era, Early Jurassic Period, or the late cretaceous period?
How do geologists learn about the history of the Earth?
Oceanic ___________________ is the amount of organic matter synthesized by organisms from inorganic materials and sunlight.
The ____________ anomaly in the clay layer at the K-Pg boundary contained about 30 times as much iridium as the amount expected at the Earth's surface.
Some ornithopods, like Gryposaurus, had flaps of skin covering the nostrils and surrounding regions that
Organisms that could survive on ______________ fared consistently better in the K-Pg extinction event.
Ornithopods had a long, muscular tail that was strengthened by _________________ which had mineralized and turned to bone.
Human skulls and lower jaws are ____________, that is, except for vertical motion of the lower jaws, the bones in our skulls are solidly fused and locked together.