Chapter 10 - Geologic Time

The longest unit of geologic time.

• Era

• Eon

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

Separation of a population of organisms from the rest of its species due to a physical barrier

• Geographic barrier

• Extinction

• Geographic isolation

• Land Bridge

Stretch of land that connects two continents that were previously separated by water

• Geographic Isolation

• Peninsula

• supercontinent

• Land Bridge

Subdivision of an era

• Eon

• Era

• Period

• Epoch

Tags

NGSS.MS-ESS1-4

The youngest era of the Phanerozoic eon (we currently live in this era). "The age of Mammals"

• Precambrian

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

The "middle" era of the Phanerozoic eon. "The age of Reptiles"

• Precambrian

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-LS4-2

The oldest era of the Phanerozoic eon. "The ago of Invertebrates"

• Precambrian

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Dominant Mesozoic land vertebrates that walked with their legs positioned directly below their hips

• Pterosaur

• Dinosaur

• Mega Mammal

• Plesiosaur

Tags

NGSS.MS-LS4-2

Mesozoic marine reptile with a small head, long neck, and flippers.

• Pterosaur

• Dinosaur

• Mega Mammal

• Plesiosaur

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Mesozoic flying reptile with large, bat like wings.

• Pterosaur

• Dinosaur

• Mega Mammal

• Plesiosaur

Tags

NGSS.MS-LS4-2