-
Geological timescale
-
5-First flowering plants appear-angiosperm
35-impact hypothesis-dinosaur mass extinction -
3-First flying reptiles called pterosaurs
13-Whoa those dinos are getting bigger and dominant on land-carnivores and herbivores have arrived. -
16-Welcome to the world of dinos. Enter the squirrel sized dino and the first forest dwelling mammals
34-Ichthyosaurs are living in the ocean, new invertebrates appear. -
8-Appalachian Mountains are created because of the collision of tectonic plates.
38- Environmental change cause mass extinction of sea invertebrates -
4-Giant cockroaches appear
15-coal deposits form -
Early reptiles reassemble large reptiles
-
37-Age of fishes, fish that can breath out of water and spend time on land.
-
24- Eurypteriads, sea stars, and coral become more common
33- Vascular land,plants,and animals such as scorpions evolve on land -
1- There is very little plant life during this period
30- Colonies of tiny invertebrates called graptolites flourished and vertebrates appear,fish did not have jaws or teeth and their bodies were covered with bony plates -
22-Tribolites appear
23-Shelled brachiopods apear -
10-The presence of the Stomatolites indicate that shallow seas were dominant on Earth during those time intervals
11- Nearly half of the valuable minerals deposits in the world occur in the rocks of this period. -
28-Modern humans developed agriculture and used tools made of iron and bronze.
19-The last glacier period ended and sea levels rose, Great lakes formed -
20-Species that did not evolve to survive extreme cold moved to warmer climates areas or became extinct.
9-Homsapians appeared and are hunters. -
26-First modern horses appear
18-Various species migrated between continents across land bridges.
