The Late Paleozoic
This extinction event is often known as the "Great Dying".
What is the end-Permian extinction?
The dinosaurs had a very bad day because of this.
What is an asteroid impact?
It was very cold during this Late Cenozoic event.
What is the Ice Age?
These reptiles were the dominant land animals in the Jurassic and Cretaceous.
What are dinosaurs?
These animals were at the bottom of the food chain in the Mesozoic, but would become more prominent in the Cenozoic.
What are mammals?
This supercontinent was formed by the collision of Gondwana and Euramerica during the Pennsylvanian.
What is Pangaea?
Chalk beds in western Kansas were deposited by this body of water.
What is the Western Interior Seaway (WIS)?
This major orogeny started in the Late Cretaceous and continued in the Cenozoic.
What is the Laramide orogeny?
The development of these plants caused major changes to terrestrial ecosystems.
What are angiosperms (flowering plants)?
Humans originated on this continent.
What is Africa?
In the Midwest, these sequences document fluctuations in sea level during the Pennsylvanian.
What are cyclothems?
Subduction of this plate was responsible for several Mesozoic orogenies.
What is the Farallon plate?
This land bridge connected North America and Asia in the Pleistocene.
What is Beringia?
These marine reptiles, closely-related to monitor lizards, were abundant in the Late Cretaceous seas.
What are Mosasaurs?
The expansion of this type of environment had a major impact on terrestrial life in the Miocene-Pliocene.
What are grasslands?
This cratonic sequence began during the Pennsylvanian.
What is the Absaroka sequence?
Accretion during the Mesozoic helped form this state.
What is California?
This fragment of the Farallon plate is still subducting under the North American plate.
What is the Juan de Fuca plate?
These marine invertebrates had an internal shell and were food sources for many marine reptiles.
What are belemnites?
Mammoths were key ecosystem engineers for this environment.
What is the mammoth steppe?
These organisms formed massive reef systems in the Devonian.
What are Stromatoporoids?
What is the Carnian Pluvial Event (CPE)?
The Madison Limestone block on Heart Mountain was placed there by these events.
What is volcanism, followed by an earthquake, and a rock slide?
These Triassic reptiles were specialized for living in the trees.
What are Drepanosaurs?
These reptiles were common apex predators in the northern hemisphere during the Paleogene.
What are Pristichampsids?