3 ERA OF PHANEROZOIC Flashcards
3 era of phanerozoic
- paleozoic era
- mesozoic era
- cenozoic era
Ancient or old life
paleozoic
started more than 540 million years ago.
paleozoic era
6 periods of paleozoic era
- cambrian period
- ordovician period
- silurian period
- devonian period
- carboniferous period
- permian period
Explosion of new kinds of organisms.
cambrian period
in this period many types of primitive animals called sponges evolved
cambrian period
Small ocean invertebrates
cambrian period
primitive animals
sponges and trilobites
animals without backbones are called
trilobites
The ocean were filled with invertebrates of many types.
ordovician period
The first fish evolved.
ordovician period
Plants colonized the land for the first time, but animals still remained in water
ordovician period
In the oceans, corals appeared and fish continued to evolve.
silurian period
On the land, vascular plants appeared. With special tissues to circulate water and other materials, they could grow larger than earlier. Non vascular plants.
silurian period
The first seed plant evolved. Seeds had a protective coat and stored food to help them survive. Seed plants eventually the most common type of land plants.
devonian period
Fish with lobe fins evolved. They could breathe air when they raise their heads above water.
devonian period
Widespread forests of huge plants left massive deposits of carbon that eventually turned to coal.
carboniferous period
The first amphibians evolved to colonize land, but they had to return to the water to reproduce.
carboniferous period
The first reptiles evolved. They were the first animals that could reproduce on dry land.
carboniferous period
All the major land masses collided to form the supercontinent.
permian period
Temperatures were extreme, and the climate was dry.
permian period
Plants and animals evolved adaptations to dryness, such as waxy leaves or leathery skin to prevent water loss.
permian period
age of reptiles
mesozoic era
dinosaurs dominated the land
mesozoic era
