Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio > Chapter 4 Dinos > Flashcards

Chapter 4 Dinos Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Cerapoda include

A

Spike thumbed iguanadon a duck bills bone heads and horned Dino’s

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

Distinguishing characteristic of cerapodans

A

Gap between front and back teeth called diastema

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

Two subgroups of cerapoda

A

Ornithopoda: iguanadonts and duck bills

Marginocephalia: bone heads and horned Dino’s

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

Ornithopods why do we know more about them than any other Dino

A

Gregarious (herding animals)

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

Distinguishing feature of ornithopodans

A

Front teeth well below cheek teeth (gun line for teeth at the front of the skull is at a different level than for back teeth)

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

Early ornithopods group?

A

Heterodomtosaurs (different sized teeth lizards)

Lived one desert setting from lower Jurassic period (Africa)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What ability was weird for reptiles today but not for cerapodans ?

A

Ability to chew

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

Heterodomtosaurs had what that made them good candidates for ?
And powerful?

A

Very long back legs and many fused and ossified tendons that provided rigidity to back
Fast runners
Arms with large muscle attachments
Digging animal

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

What do they currently not know how to differentiate in Dino’s

A

Sex

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

Sexual dimorphism in heterodomtosaurs

A

Considerable and sizable shape differences between sexes

Long canines

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

advanced ornithopods

A

Hypsilophodonts, iguanadonts, hadrosaurs

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

Key features of advanced ornithopods

A

Cross crossed back and tail tendons that provided rigidity to torso and balancing of tail
Forward prong on pubis to anchor guts

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

Hypsilodonts — have evidence there were

A

Dinosaurs up in trees not just from this group but from small theropods

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

He discovery of burrows and dens shows some Dino’s were

A

Fossorial

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

Hypsilophodonts had a very precise ?

A

Slicing chopping dentition

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

Features of hadrosauriforms walked on

A

Three hoofed middle toes

Flared out about with no front teeth that presumably enabled browsing on ground plants

17
Q

Iguanodonts were extremely advanced ? That didn’t have what but were in possession of

A

Ornithopods
Grinding dentition
Thumb spikes

18
Q

Thumb spikes for

A

Defense against predators

19
Q

Where were 39 iguanadon found

What did this discovery firmly establish, first evidence that

A

Belgian coal mine
Bipedal stance and correct location of thumb spikes
Herding animals

20
Q

Ouranosaurus from niger had what? Which Dino

A

Iguanadont

Tall dorsal spikes like bison , display or hump to store fat

21
Q

Iguanadonts dust by when and replaced by?

A

Late Cretaceous

Hadrosaurs with grinding and slicing dentitions

22
Q

Some of hadrosaurs were bigger than

A

T. rex

23
Q

Key attributes of hadrosaurs

A

Very broad duck like bills
Dental batteries composed of hundreds of lightly adjoining teeth
Harder dental tissue ,enamel, on one side SO teeth self sharpening

24
Q

Know more about which group than any other

A

Hadrosaurs

25
Q

New teeth of hadrosaurs formed every, how many a year

A

50-80 days

3300

26
Q

Over splitting- example

A

Naming more species than really exist

Crested dinosaurs hastily named were just juveniles or male and female variants

27
Q

Why do we know hadrosaurs were terrestrial

A

Tails couldn’t bend due to ossified tendons , ate terrestrial plants, often found in highland or desert settings

28
Q

Jack Horner founded what

Able to establish ?

A

Site in NW Montana where 10,000 maisaura were supposedly flattened by volcanic ash
Size and age using growth lines in skeletons
7-10 years adult size (fast for reptiles)

29
Q

What did makela and Horner find

What does name maisaura mean

A

Nesting ground and found that the parents had been nourishing animals
Name means good mother lizard

30
Q

What were one of the dinosaurs he named (Marquez) studied which Dino’s

A 
Glishades eriksoni (Ericksons mud devil) named after professor 
Ornithopod

Bio (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions