geol exam 3

Question 1

Paleozic

Answer 1

first era of the pahaneozic eon, starting at 540 MA

Question 2

carbeniferous

Answer 2

the period of the Paleozoic that includes mississipian and Pennsylvanian

Question 3

tracheophytes

Answer 3

vascular plant

Question 4

amniotes

Answer 4

protected water sack “membrane” around gesting fetus

Question 5

squamates

Answer 5

predominant reptile group living today lizards + snakes

Question 6

ice house & green house

Answer 6

the two climate states of earth through the Phanerozoic; green house more common

Question 7

ice house

Answer 7

bi polar ice caps; both the north and south poles polar ice caps

Question 8

arthopleura

Answer 8

the largest terrestrial invertebrate of the paleozic giant bug 8.5 ft

Question 9

carbon drawdown

Answer 9

the removal of co2 from the atmosphere

Question 10

O18 and O16

Answer 10

an isotopic ratio used to measure greenhouse vs ice house conditions O18 larger

Question 11

Pangea

Answer 11

a Paleozoic supercontinent made from lavrentia into the north and Gondwana land in the south

Question 12

glacial indications

Answer 12

glacial striations - rubbing/edging grooves on bedrock

Question 13

varves

Answer 13

special types of laminations that indicate glacial conditions

Question 14

siberian traps

Answer 14

a lava flow that is now represented by over 7 million km^2 of basalt rock

Question 15

lystrosaurus

Answer 15

permian & triassic therapsid , herbivores

Question 16

life assemblage

Answer 16

collection of fossils that represent a community or ecosystem

Question 17

redox state

Answer 17

the addition or loss of electrons fe 3+ oxygen fe2+anoxic

Question 18

death assemblage

Answer 18

mixture of taxas from different ecosystems or communities