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Lecture 7 Flashcards

1
Q

Cambrian Period

A

541 - 485 Ma
- complex life emerges

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2
Q

cambrian explosion start

A

538.8 Ma

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3
Q

when did all principal animal groups develop by

A

530 to 520 Ma

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4
Q

ordovician period

A

485 - 444 Ma

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5
Q

epeiric

A

shallow inland seas

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6
Q

ordovician queenston clastic wedge in NE recorded as

A

queenston shale, whirlpool sandstone, grimsby shale and thorold sandstone

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7
Q

silurian period

A

444 - 419 Ma

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8
Q

mid-silurian record in NE

A

Neahge, Reynales, Irondequoit, Rochester, and Lockport

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9
Q

mass extinctions

A

episodes of globally-significant extinctions
- more than 20% of marine genera
- 75% of all species

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10
Q

Five Phanerozoic mass extinctions

A

(Late) Ordovician, Devonian, Permian, Triassic, Cretaceous

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11
Q

Devonian Period

A

419 - 359 Ma
- age of the fishes
- life starts going to land

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12
Q

Mississippian

A

359 - 323 Ma

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13
Q

Pennsylvanian

A

323 - 299 Ma

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14
Q

Carboniferous period

A

359 - 299 Ma
- plant life propogates
- coal develops - carbon sequestration

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15
Q

Permian period

A

299 - 252 Ma

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16
Q

first animal to walk on land

A

Ichthyostega, but the tiktaalik was a transition form

17
Q

when did Myria;ods start to conquer land

18
Q

oldest sea floor

A

340 Ma in the Mediterranean Sea

19
Q

average sea floor age

20
Q

middle ordovician continental layout

A

deep ocean basin between laurentia and baltica (Iapetus ocean)

21
Q

middle silurian continental layout

A

laurentia and baltica touching, no sea between

22
Q

early devonian continental layout

A

euramerica being created as laurentia and baltica get pushed together. taconic mountains is being created

23
Q

late carboniferous continental layout

A

pange has been formed from laurussia and gondwana fusing together 310 Ma, and the taconic mountains are done being created. most of the continental pieces are together

24
Q

late permian continental layout

A

almost all of the continental pieces are together

25
Q

pangea time period

A

formed starting 410 Ma, completely together by 250 Ma (end of permian), and break up started 200 Ma

26
Q

rifting of rodinia and creation of lapetus

27
Q

lapetus ocean formed by

28
Q

taconic orogeny

29
Q

acadian orogeny

30
Q

how many ice ages in the past 3 Ga

31
Q

tetrapods

A

4 limbed vertebrates (amphibians, reptiles, birds, dinos, mammals)

32
Q

polydactyl

A

more than 5 digits

33
Q

mesozoic era (age of the dinosaurs)

A

252 - 66 Ma

34
Q

triassic period

A

252 - 201 Ma

35
Q

jurassic period

A

201 - 145 Ma

36
Q

creataceous period

A

145 - 66 Ma

37
Q

archosaurs

A

(diapsids)- a group including crocodiles, extinct flying reptiles, and dinosaurs

38
Q

saurischia

A

lizzard-hipped. pubis points forwards with the ischlum backwards, and the illum on top

39
Q

ornithischia

A

bird-hipped. the pubis and ischlum points backwayds with the illum on top

HotE (5 decks)

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