Lec 18 part 2 Flashcards

test study

1
Q

What does competition model say success of carniverous dinosaurs with different ways of walking cause?

A

decline of large bodied herbivorous mammal like reptiles during middle triassic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What did the dissappearance of large therapid herbivores give opportunity to rise?

A

Large herbivore dinosaurs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the opportunistic model of the rise of dinosaurs

A

the therapids disappeared for some unknown reason and the dinosaurs took advantage, diversified and filled empty ecological niches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are 4 important physical characteristics of dinosaurs

A
  1. diapsid skulls (2 hole openings)
  2. teeth (specialized and complex)
  3. 2 different pelvis structures
    a. saurichia b. ornitshia
  4. orientation of legs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what key to dinosaur success?

A

orientation of legs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What stimulated development of dinosaur bipedal posture (walk on 2 legs upright?

A
  1. ancestors lived in swamps
  2. aquatic life stimulated development of
    a. hind limbs and
    b. fore limbs that efficient at grabbing/catching food
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What climate change did improved bipedal posture increase chances for survival?

A

increase in arid dry conditions during mesozoic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What misconception exist about dinosaur motion?

A

slow and lumbering

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what misconception exist about dinosaur intelligence

A

very dumb needed two brains

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what misconception exist about where dinosaurs could live?

A

Jurassic sauropods so large could only live in swamps (water) that helped support their weight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What misconception exists about color?

A

all dull black or dark green grey

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what misconception exists about dinosaur food source?

A

that they ate cavemen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How many major divisions of dinosaurs are there?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are two divisions of dinosaurs?

A
  1. saurischia 2. ornithschia
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What 2 groups of saurischia division ?

A

theropoda and sauropodmorphs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what group of saurischia division were the killers of the Mesozoic?

17
Q

What are 3 dinosaurs of saurishchia killer group?

A
  1. allosaurs 2. tyrannosaur 3. velociraptors
18
Q

What 3 groups of ornithischia? hint T.O.M

A
  1. orniothopods 2. thyreophora 3. margioncephalia
19
Q

what does ornithischia mean?

A

bird hipped

20
Q

what did ornithischia eat?

A

herbivores

21
Q

what an example of ornithiopods

A

hadrosaurs

22
Q

what 2 example thyreophora?

A
  1. stegosaurus 2. anklyosaurus
23
Q

what 2 examples of marginocephalis?

A

1.Ceratopsian 2. pachycephalosaurus

24
Q

What dinosaur is the dragon of the sky called?

A

pterosaurus

25
Where do flying dinosaurs gain access to food compared to other dinosaurs?
flying dinosaurs get access to food that is also in the air
26
what 2 advantages did flying give pterosaurus
improved mobility and maneuverablity
27
How did improved mobility and maneuverability help flying dinosaurs?
made search for food and shelter rapid and efficient
28
How did flying improve chance for survival of pterosaurus?
could escape predators by flying away
29
How did flight change where pterosaurus lived?
flight led to migration
30
how did migration through flight benefit pterosaurus
1. allowed travel by season 2. travel to favorable climate 3. favorable food supply 4. favorable nesting site
31
what did flight make possible for pterosaurus
1. dispersal over long distance | 2. over geographic barriers