Geological Time

Question 1

Precambrian

Answer 1

4,500-544 MYA

Question 2

Cambrian

Answer 2

Paleozoic Era 1/6
544-488 MYA

Question 3

Ordovician

Answer 3

Paleozoic Era 2/6
488-444

Question 4

Silurian

Answer 4

Paleozoic 3/6
444-416

Question 5

Devonian

Answer 5

Paleozoic 4/6
416-359 MYA

Question 6

Carboniferous

Answer 6

Paleozoic 5/6
359-229 MYA

Question 7

Permian

Answer 7

Paleozoic 6/6
299-250 MYA

Question 8

Triassic

Answer 8

Mesozoic 1/3
250-199 MYA

Question 9

Jurassic

Answer 9

Mesozoic 2/3
199-145

Question 10

Cretaceous

Answer 10

Mesozoic 3/3
145-65 MYA

Question 11

Paleogene

Answer 11

Cenozoic 1/3
65-23 MYA

Question 12

Neogene

Answer 12

Cenozoic 2/3
24-2.6 MYA

Question 13

Quartenary

Answer 13

Cenozoic 3/3
2.6-0 MYA

Question 14

Paleocene

Answer 14

🏷️ 1/3 of Paleogene
📐 Cenozoic Era
🕰️ 66-56 MYA

Question 15

Eocene

Answer 15

🏷️ 2/3 of Paleogene
📐 Cenozoic Era
🕰️ 56 to 33.9 MYA

Question 16

Oligocene

Answer 16

🏷️ 3/3 of Paleogene
📐 Cenozoic Era
🕰️ 33.9-23 MYA

Question 17

Miocene

Answer 17

🏷️ 1/2 of Neogene
📐 Cenozoic Era
🕰️ 23.03 to 5.333 MYA

Question 18

Pleiocene

Answer 18

🏷️ 2/2 of Neogene
📐 Cenozoic Era
🕰️ 5.333- 2.58

Question 19

Pleistocene

Answer 19

🏷️ 1/2 of Quartenary
📐 Cenozoic Era
🕰️ 2.58MYA-11,700

🧊 Cycles of Ice Ages of 40-100 thousand years cycling over 2.5 Million Years

👣 Homo Sapiens emerge and spread throughout Afro-Eurasia and all other Homo species go extinct in late Pleiocene

Question 20

Holocene

Answer 20

🏷️ 2/2 of Quartenary
📐 Cenozoic Era
🕰️ 11,700 years-Now
🧊🔥 End of the Ice Age, temperatures rise..

👣 Epoch of man & agriculture 🐄 🌾

Question 21

☠️ Ordovician-Silurian

Answer 21

☠️ 1st Mass Extinction
🕰️ 445 MYA
🧊 Sea levels fall and temperatures drop as thick of ice sheet covers South Pole 🥶
🏝️ Shallow sea-shelfs obliterated
🦑 2/3 sea invertebrates become extinct as the whole ecosystem is affected

Question 22

☠️ Late Devonian

Answer 22

☠️ 2nd Mass Extinction
🕰️ 365 MYA
🫧 Oxygen level drops & temperatures drop again 🥶
🐟 Many cartilaginous fish die
🦈 Replaced by bony fish & sharks

Question 23

☠️ Permian-Triassic

Answer 23

☠️ 3rd Mass Extinction
🕰️ 250 MYA
🌋 Heavy volcanic activity during formation of Pangea 🌍 reducing shelf seas and shallow water, temperatures rise 🥵
🏝️ Shallow sea-shelfs obliterated again
🦀 96% of all marine species die
🐊 70% of all species go extinct

😳 Biggest extinction to date

Question 24

☠️ Triassic-Jurassic

Answer 24

☠️ 4th Mass Extinction
🕰️ 200 MYA
🌍 Pangea breaks up and activates more volcanic activity 🌋
🦖 Dinosaurs win the battle
🪱 Marine invertebrates and sea shelf organisms lose out with increased heavy rainfall cycles 🌧️

Question 25

☠️ Cretaceous-Paleogene

Answer 25

☠️ 5th Mass Extinction 🕰️ 66 MYA ☄️Asteroid hits Chicxulub, Yucatan 🌫️ Acid rain & dark skies 🌿 Plants affected 🦕 Dinosaurs die 🐀 🐥 Ancestors of mammals and birds survive & make way