The Dinosaur (L30)

Question 1

What does the wide distribution of dragon mythology voer diff cultures reflect?

Answer 1

reflects the widespread distribution of dinosaur remains

Question 2

What did dinosaurs and other advanced reptiles evolve from?

Answer 2

a primitive reptile group called the captorhinomorphs or we call them “stem reptiles”

this reptile group is evolved from amphibians

Question 3

What subgroups do all other reptiles belong to?

Answer 3

The Squamates (true lizard and snakes)
The Archosaurs (crocodilians, thecodonts, and dinos and birds)

Question 4

What is the succes of the dinosaurs largely attributed to?

Answer 4

The development of an upright posture from the sprawling posture of earlier reptile forms

Question 5

What advantages did dinosaurs have by having legs under their body and a full upright posture?

Answer 5

by having legs under the body, dinosaurs could walk and run without squishing the chest cavity and could therefore run and breathe at the same time for longer

Question 6

Dinosaurs are classified on teh arrangement of their _____?

Answer 6

Hip bones

Question 7

What are the 3 bones in the dinos hip?

Answer 7

the ilium (attached to the spine)
ischium (at the back and bottom)
the pubis (pubic bone)

Question 8

How did the hips of a Saurichian dino look? (lizard hipped)

Answer 8

backward facing ischium and foreward facing pubis (meat and plant eating forms are known from this group)

Question 9

How did the hips of an Ornithischian (bird-hipped) dino look like?

Answer 9

backward facing ischium and pubis

all Ornithischians were plant eaters

Question 10

What were the earliest dinos?

Answer 10

Meat-eating saurichians (called theropods)

Question 11

What were the 2 subgroups of The Saurischians?

Answer 11

the Theropods and the Sauropods

Question 12

What are 2 characteristics of the Theropods?

Answer 12

meat eters
bipedal

Question 13

What are 2 characteristics of Sauropods?

Answer 13

Plant eaters
Quadrupedal

Question 14

What is the largest subgroup of The ornithischians?

Answer 14

the Ornithopods whcih were duck-billed hardosaurs and primarily bipedal but could walk on all 4’s to graze

Question 15

What are Stegosaurs?

Answer 15

“Plated” dinos who were quadrupedal and had 2 rows of plates on their back and splikes on their tail

Question 16

Wht are Ceratopsians?

Answer 16

Horned dinos who were quadrupedal and distinguished by a frill at the back of the head

Question 17

What are the Ankylosaurs?

Answer 17

Fused dinos who were quadrupedal and looked like walking tanks with a big club at the end of their tail

armor was developed to an almost ridiculous extent

Question 18

What is the only way for a predator to have killed an Ankylosaurs?

Answer 18

If the dino was somehow flipped over on its back

Question 19

What are Pachycephalosaurs?

Answer 19

bone-headed dinos who were bipedal and had a huge mass of bone on the top of their head

used for headbutting

Question 20

What is an overturned misconception about dino behaviour from the finding of fossil nests?

Answer 20

Some if not most dinos appear to have been particularily good parents

Question 21

What is a proof of an Oviraptor being a good parent?

Answer 21

these dinos were thought to be egg robbers but there was a skeleton found to be a parent oviraptor that was buried alive while protecting its own eggs

Question 22

What are the most bird-like theropod dinos known?

Answer 22

the Oviraptors

developed a bird-like beak and a shortened tail

Question 23

What are the 8 Misconcetions on dinos?

Answer 23

1. Dinos were slow, tail-dragging brutes
2. Dinos had scaly skin
3. Dinos were dumb
4. Pterosaurs were flying dinos
5. If the Loch Ness Monster existed, it would be a dino
6. Dinos were cold-blooded
7. Dinos were dull-colored
8. Dinos were unsuccessful

Question 24

What was the purpose of the tail of dinos?

Answer 24

provide a conterweight to the mass at the front and T-Rex could run as fast as 30km/hr

Question 25

What are dino skins found to be like?

Answer 25

had more of a pebbled texture like bird skin than scaly skin like that of a lizard or snake

Question 26

Which Theropod dino is found to be smart?

Answer 26

Troodon had a much higher brain volume to body volume ratios

Question 27

What are Pterosaurs if not dinos?

Answer 27

they were reptiles but belonged to a group that is seperate from dinos

Question 28

There are dinos that lived exclusively in water. T or F

Answer 28

False, although there were dinos that hunted in water, there were non that lived exclusively in water

Question 29

What are found in small theropod dinos?

Answer 29

they show features that closely resemble those of warm-blooded animans

Question 30

What is the most convincing evidence for warm bloodedness in dinos?

Answer 30

evidence of a downy body covering (dino fuzz), indicating an attempt to conserve heat

Question 31

What discovery indiciated that not all dinos were dull-colored?

Answer 31

the discovery of feathered dinos