Phanerozoic Eon ( Paleozoic Era_542_251 ma )

Question 1

The Golden Age of Trilobites.

Answer 1

Cambrian (542 - 488 ma)

Question 2

The age of Invertebrates

Answer 2

Cambrian (542 - 488 )

Question 3

As the fragmentation of Panotia was ongoing, six (6) continents were started to form namely as Gondwana, Laurentia, Baltica, Siberia, kazakhstania, China.

Answer 3

Cambrian ( 542 - 488 ma )

Question 4

Cambrian Explosion : explosive development of new type of animals.

Answer 4

Cambrian ( 542 - 488 )

Question 5

First Reef builders : Archeacyathids

Answer 5

Cambrian ( 542 - 488 )

Question 6

Sauk Transgression: Melting of Varangian Ice

Answer 6

Cambrian (542 - 488 ma )

Question 7

First appearance of Nautiloids which are dominant predators that time.

Answer 7

Ordovician (488 - 444 ma )

Question 8

First orogeny to affect the Appalachians was the Taconic Orogeny which was active at this time.

Answer 8

Ordovician

Question 9

Fungi appeared on land.

Answer 9

Ordovician ( 488 - 444 ma )

Question 10

First non - vascular plants

Answer 10

Ordovician (488 - 444 ma )

Question 11

Abundance of Cephalopods

Answer 11

Ordovician ( 488 - 444 ma )

Question 12

Diversification of Acritarchs

Answer 12

Ordovicians

Question 13

Euryptirids (Sea Scorpions )

Answer 13

Ordovician ( 488 - 444 ma )

Question 14

Marking of Caledonian Orogeny as the 2nd episode in Appalachians mountain building.

Answer 14

late Silurian to early Devonian

Question 15

First appearance of Acanthodian - first jawed fishes.

Answer 15

Silurian

Question 16

First vascular plants - Cooksonia

Answer 16

Silurian ( 444 - 416 ma )

Question 17

First freshwater fish

Answer 17

Silurian ( 444 - 416 ma )

Question 18

First Coral reef

Answer 18

Silurian ( 444 - 416 )

Question 19

Age of Fishes

Answer 19

Devonian ( 416 - 359 ma )

Question 20

Age of Orogenies

Answer 20

Devonian ( 416 - 359 )

Question 21

First appearance of wingless insect

Answer 21

Devonian ( 416 - 359 )

Question 22

First ammonites

Answer 22

Devonian ( 416 - 359 ma )

Question 23

First amphibian

Answer 23

Devonian (416 - 359 ma )

Question 24

First Sharks

Answer 24

Devonian ( 416 - 359 ma )

Question 25

Oldest known amphibian fossils with an upper devonian in the old red sandstone belonging to the genus of Ichthyostega.

Answer 25

Late Devonian

Question 26

Cordilleran Antler Orogeny

Answer 26

Devonian ( 416 - 359 ma )

Question 27

Closing of Iapetus Ocean marked by Acadian Orogeny. The third to affect of Appalachian Mountain.

Answer 27

Devonian ( 416 - 359 ma )

Question 28

Cordilleran Antler Orogeny

Answer 28

Devonian ( 416 - 359 ma )

Question 29

Discovery of Tiktaalik Roseae ( earliest tetrapod )

Answer 29

Late Devonian

Question 30

Ellesmere Orogeny - Collision of Siberia and Laurensia forming the Ural Mountain Belt

Answer 30

Late Devonian

Question 31

Diversifiction of Plants

Answer 31

Devonian ( 416 - 359 )

Question 32

First appearance of Lypcosids, Conifers, Cycads, and First Forest.

Answer 32

Carboniferous ( 359 - 299 ma )

Question 33

Age of Plants

Answer 33

Carboniferous

Question 34

Gondwana collided with Laurasia

Answer 34

Early Carboniferous

Question 35

oldest known reptile - Westlothiana

Answer 35

late Mississippian

Carboniferous ( 359 - 299 )

Question 36

Pelycosaurs or Pinback reptiles evolved from Protorothyrids.

Answer 36

Pennsylvanian

Question 37

age of coal

Answer 37

Carboniferous

Question 38

Complete Assembly of Pangea - Marked by Hercynian in Europe, Alleghenian and Ouachita orogeny

Answer 38

Permian ( 299 - 251 ma )

Question 39

Formation of Panthalassa Ocean ( superocean of Pangaea)

Answer 39

Permian ( 299 to 251 ma )

Question 40

Siberian Traps

Answer 40

Permian (299 - 251 ma)

Question 41

Karoo Glaciation is in between the periods of:

Answer 41

Carboniferous and Permian

Question 42

Hylonomus found in Nova, Scotia

Answer 42

Pennsylvanian