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GEOLOGY 130 > quiz four > Flashcards

quiz four Flashcards

1
Q

When did the lizard like beings first start coming on the scene

A

about 250 Ma

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2
Q

What characteristic do we share with the bony fish

A

they have lobed fins!

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3
Q

lobes are precursors to what…

A

walking limbs (means we are related to the amphibians)

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4
Q

what kind of lifestyle to our relatives start living at this point

A

a “semi-aquatic” lifestyle. Half on land and half in water. just like Icyhostega.

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5
Q

creatures that come after icyostega. reproduce through amniotic eggs

A

tetrapods

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6
Q

how did the tetrapods reproduce

A

they lay the amniotic eggs but these do not rely on water

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7
Q

turtles are…

A

anapsids

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8
Q

marine reptiles like the plesiosaur are…

A

Euryapsids

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9
Q

crocodilia & pterodactyl are..

A

diapsids

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10
Q

DINOSAUR DIVERSITY IS GREATEST IN….

A

THE CRETACAOUS

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11
Q

What are the two main dinosaur groups

A

Ornithischia & Saurischia

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12
Q

what kind of dinosaur are birds descended from

A

Theropods

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13
Q

What are dinosaur bones made out of

A

organic matter and calcium. they also remodel as they grow

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14
Q

what do the lines of attested growth mean..

A

Dinosaurs, like us, have childhood, adolescence, and adulthood

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15
Q

evidence dinosaurs are warm blooded

A

upright posture, fast growth rate, their size infers active circulation system, & predator prey ratios

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16
Q

fossilized feces

A

coprolites.

17
Q

details of the end k/t extinction

A

so it was a nice day 65Ma, then a bolide that’s really big comes. Crosses through the atmosphere in one second, and the air became very hot

then it collided into the crust and caused lava to splash up

18
Q

more details pt 2

A

then forest caught on fires, many different natural disasters, tsunamis that were absolutely massive

Americas became a wasteland, followed by dark winter

19
Q

what occurred in Italy

A

so there was a ocean plankton extinction at the same time of the dinosaurs

a clay layer was found but not really anything below it

cosmic dusts and layers of iridium,

GEOLOGY 130 (8 decks)

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