Developing a Geologic Timeline
A measurement of time referring to the longest unit of geographic time
What is an Eon?
Page 363
The oldest era of the Phanerozoic eon
What is the Paleozoic Era?
Page 371
An oxygen poor environment where, over time, plant material changes to coal
What is a coal swamp?
Page 374
Dominant Mesozoic land vertebrates that walked with their legs positioned directly below their hips
What are Dinosaurs?
Page 382
Large Mammals of the Cenozoic era
What are mega-mammals?
Page 390
A subdivision of Eons
What is an Era?
Page 363
The Paleozoic Era is split into ___ parts
What is 3?
Page 371
The largest mass extinction event in Earth's history
What is the Permian Mass Extinction?
Page 375
Scientists hypothesis that dinosaurs are closely related to
What are present day birds?
Page 382
Most of the mammals that live in Australia
What is a Marsupial?
Page 391
The Phanerozoic eon
What is Earth's current era?
Page 363
A body of water formed when ocean water floods continents
What is an Inland Ocean?
Page 372
Pangaea
What is all of Earth's continents shifted together?
Page 375
Another kind of animal that was alive during the Mesozoic Era
What is a Mammal?
Page 383
Connected Australia and South America to Antarctica
What is a land bridge?
Page 391
Earth's 4.6 billion years of history are divided into ____
What is unequal length?
Page 363
All life was in the ___ during the Early Paleozoic Era
What are oceans?
Page 372
One of the earliest amphibians
What is a Tiktaalik?
Page 374
The ending of the Mesozoic Era
What is the Cretaceous extinction event?
Page 383
A 3.2 million-year-old human ancestor named by scientists
Who is Lucy?
Page 392
_____ can be used to assist in developing a geologic time scale
What are fossils?
Page 364
The organisms from the Cambrian explosion were primarily
What are invertebrates?
Page 371
Was referred to as the ____
What is the age of amphibians?
Page 374
The largest Pterosaur
What is a Quetzalcoatus?
Page 383
What is a global-warming climate change?
Page 392