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Cambrian
1; There is very little plant life 23; Shelled brachiopods appear -
Period: to
J Gonzalez 8
Geological Timescale -
Ordovician
24; Eurypterids, sea star, and coral become more common 30; grapholites flourish, fish did not have jaws or teeth. -
Silurian
5; First flowering plants appear 21; Early reptiles resembling large lizards appear -
Devonian
33 Vascular land plants and animals, such as scorpions begin to evolve on land. 37; Age of Fishes, fish that can breathe out of water and spend time on land form -
Carboniteous
11; Nearly half of the valuable mineral deposits in the world occur in the rocks of this period 15; coal deposits form. -
Mississippian
2; Swamps and forests cover the land 31;huge plants develop, early amphibians form -
Pennsylvanian
4; Giant cockroaches appear 32; Antarctic icecaps begin to form -
Permian
6; Himalayas develop due to uplifting caused by the Indian subcontinent and Eurasian continents colliding 38; Enviromental change causes mass extinction. -
Triassic
16; Welcome to the world of Dinosaur! 27; Many early mammals become extinct. -
Jurassic
3;Flying reptiles are in the air now. 13; Whoa those dines are getting big. -
Cretaceous
34; Ichthyosaurs are living in the ocean 35; Impact hypothesis -
Eocene
17; Flying squirrels, whales, and bats appear 26; First modern horses appear. -
Palocene
12; first primates evolve 29; small rodents appear -
Oligocene
8; Appalachian mountains form 10; shallow seas covered much of earth. -
Miocene
25; World wide temperatures begin to drop 36; Mediterranean sea dries and refills -
Pliocene
20; species that did not develop died 18; various species migrated -
Pleistocene
9; Humans appear and are hunters 25; world wide temperatures drop. -
Holocene
19; last glacial period ends.28; modern humans develop -
ANthropocene
7; human kind messes a lot of stuff up -
Please give me a B i am crying
