Phanerozoic eon (Mesozoic era_251_80ma)

Question 1

Break up of Pangea. Probably Gondwana and Laurasia initiation at mid triassic.

Answer 1

Late Triassic

Question 2

First apperance of Frogs, Turtles and Snakes.

Answer 2

Triassic ( 251 to 201. 6 ma)

Question 3

First apperance of Archosaurs - Protodinosaurs

Answer 3

Triassic ( 251 - 201.6 ma )

Question 4

First appearance of Rodents

Answer 4

Triassic (251 - 201.6 ma )

Question 5

Scheratinian (Plesasaurs) first apperance

Answer 5

Triassic ( 251 to 201.6 ma )

Question 6

First apperance of Cocoliths and Dinoflagellates

Answer 6

Triassic (251 - 201.6 ma )

Question 7

First apperance of Sea Urchins

Answer 7

Triassic ( 251 - 201.6 ma )

Question 8

Sonoma Orogeny - a mountain building in western America following the late Devonian Antler Orogeny

Answer 8

Triassic (251 - 201.6 ma )

Question 9

Pollenation (200 ma)

Answer 9

Triassic ( 251 to 201.6 ma )

Question 10

Diversification of Ammonites (200 ma )

Answer 10

Triassic (251 - 201.6 ma )

Question 11

Nevadan Orogeny- First pulse of Nevadan Orogeny in Sierra Nevada

Answer 11

Jurassic (201.6 - 145.5)

Question 12

Ammonite in Mindoro (Mansalay Formation) (200).

Answer 12

Jurassic (201.6 - 145.5)

Question 13

First apperance of planktonic forams

Answer 13

Jurassic (201.6 - 145.5)

Question 14

First Bird - Archaeoapteryx, “old wing”.

Answer 14

Jurassic (201.6 - 145.5)

Question 15

First apperances of Pterosaurs or flying reptiles.

Answer 15

Jurassic (201.6 - 145.5)

Question 16

Rifting of India (150 ma)

Answer 16

Jurassic (201.6 - 145.5)

Question 17

Ammonite Fossil in Cataduanes

Answer 17

Cretaceous

Question 18

First apperances of Marsupial

Answer 18

Jurassic (201.6 - 145.5)

Question 19

First apperances of Diatoms

Answer 19

Cretaceous

Question 20

First apperances of Angiosperms

Answer 20

Jurassic (201.6 - 145.5)

Question 21

Sevier Orogeny is a mountain building event that produced the Sevier orogenic belt.

Answer 21

Cretaceous ( 145 - 65.5 ma )

Question 22

Ontong Java Plateau

Answer 22

Cretaceous ( 145 - 65.5 ma )

Question 23

South America breaks away from Africa and the Formation of Atlantic ocean started (105 ma)

Answer 23

Cretaceous ( 145 - 65.5 ma )

Question 24

Laramide Orogeny - a series of mountain building events that affected much of western America in late cretaceous and Paleogene time (80 ma).

Answer 24

Cretaceous ( 145 - 65.5 ma )

Question 25

Crocodiles appeared (110 ma).

Answer 25

Cretaceous ( 145 - 65.5 ma )

Question 26

Age of Cycads

Answer 26

Triassic

Question 27

Age of dinosaurs

Answer 27

Jurassic