Triassic Earth

Question 1

Pangaea

Answer 1

the super continent

Question 2

Panthalasa

Answer 2

singular super ocean

Question 3

Gondwana

Answer 3

lower hemisphere of Pangaea

Question 4

Laurasia

Answer 4

upper hemisphere of Pangaea

Question 5

Tethys

Answer 5

embayment in coast between Laurasia and Gondwana

Question 6

What was the climate like?

Answer 6

very warm (no glaciers)

two seasons

• very long dry season
• shorter monsoon season in the summer

Question 7

marine habitat

Answer 7

shallow marine habitat surrounding pangaea

Question 8

marine life

Answer 8

mounds of coral reef

molluscs (clams, gastropods, ammonoid cephalopods)

Question 9

ammonoids

Answer 9

went extinct in the K-Pg

suture patterns formed from the septa (walls) b/w chambers and the coiled shell

Triassic -> ceratitic sutures
Jurassic & Cretaceous -> ammonitic sutures

Question 10

marine predators

Answer 10

plesiosaurs

sharks & bony fish

ichthyosaurs (like shonisaurus; largest marine predator in Late Triassic)

Question 11

vegetation

Answer 11

gymnosperm trees (CONIFERS, CYCADS, GINGKOS)

understory comprised of FERNS and SEED FERNS

Question 12

land animals

Answer 12

primitive dinos (herrerasaur, prosauropods)

first turtles, pterosaurs, mammals!

Question 13

Tr-J extinction

Answer 13

volcanic eruptions resulting in massive basalt floods

CAMP (central atlantic magmatic province)

caused intense global warming and ocean acidificaton

Question 14

what became extinct in the Tr-J? (2)

Answer 14

Phytosaurs

mammal like repties