Earth lore Flashcards
What are the Eons of Earth, In Order
Hadean (4.6-4BYA), Archaean(4-2.5BYA), Proterozoic(2.5Bya-542MYA), Phanerozoic(542MYA- Present)
what are the Eras of the Phanerozoic Eon?
Paleozoic, Mesozoic, and Cenozoic
Periods within the Paleozoic?
Cambrian (542-488 mya), Ordovician (488-434 MYA), Silurian (434-416 MYA), Devonian (416-354 MYA) , carboniferous (354-299 MYA), Permian (299-251 MYA)
Periods of the Mesozoic?
Triassic(251-200 MYA), Jurassic (200-145.5 MYA), and Cretaceous (145.5-65.5 MYA)
periods of the Cenozoic?
tertiary (65.5-2.6 MYA), Quaternary (2.5 MYA-now)
The oldest fossil was from
Early Archaean 3.8 BYA
The oldest chemical evidence is
3.6 BYA from the Archaean eon
When did Earth’s oceans form?
4.4 BYA during the Hadean Eon when Water vapor was being released by volcanic activity
When did oxygen begin to accumulate in the earth atmosphere
1.5 BYA after all the iron in the ocean had reacted with the oxygen
When did the first animals appear
700 million years ago during the Cryogenian period in the Neoproterozoic era
When did bony fish appear
During the Silurian 410 million years ago
When did the first Mycorrhizal fungi appear
During the Ordovician
When did the first tree plants appear
400 MYA during the Devonian
When did insects appear
400 million years ago in the Devonian
First Cartilaginous fish appeared
450 MYA During the Ordovician
The first amniotes appeared d
318 MYA in the Carboniferous
When did Mammals appear
178 MYA in the Triassic
When did reptiles appear
315 MYA in carboniferous
When did birds appear
100 MYA during the jurassic
K-T extinction
bye dinosaurs
When did cnidarians appear
580 MYA during the Ediacaran
When did angiosperms first appear
145 MYA during the cretaceous
When did Bryophytes first appear
450 MYA during the Ordovician
When did Humans appear
2 MYA in the early quaternary
