Week 8: Theropods

Question 1

are theropds saurischia or ornithisthcians

Answer 1

saurischia

Question 2

define theropd

Answer 2

all saurischian that aren’t sauropods

Question 3

theropod walking style

Answer 3

narrow legs, one foot infront of the other horizontal, head balanced with tail (bipedal)

Question 4

theropod claws

Answer 4

grasping claws

Question 5

allasourus foot print and how many toes

Answer 5

foot print 3 toes
actually has 4 toes (one behind the foot)

Question 6

dromaeosaurs & troodontids toes and foot print

Answer 6

foot print 2
toes 3- has a sickle claw raised up for attacking

Question 7

therapod arms

Answer 7

has 3 fingered hands
could have 4 fingers but that is more primitive

Question 8

myths about theropods arms

Answer 8

they are small
they were weak (could lift up to 600lbs)
they were useless (used for grasping mates)

Question 9

why were theropod arms small

Answer 9

arms would be too heavy for their weight distribution

Question 10

theropod jaws

Answer 10

carnivarious theropods had larger heads with powerful bite. Slicing scissor like jaw, designed to cut through prey (bone/flesh)

Question 11

Theropod teeth

Answer 11

curved backwards, serrated, slightly rounded (for crunching bone)

Question 12

What theropod had beaks for grinding small vegitation

Answer 12

ornithomimids

Question 13

What theropod had a short jaw for crushing shell fish

Answer 13

oviraptors

Question 14

theropod vision

Answer 14

eyes facing forward
stereoscopic (3D)
shortened snouts for increased range

Question 15

Theropod brains

Answer 15

largest dino brains. Had great heightened senses

Question 16

What is EQ

Answer 16

body size:brain size ratio
theropods have the highest EQ

Question 17

What are reasons for different morphs

Answer 17

Environmental
genetic
gender (they/them)/sex
age

Question 18

Sexual dimorphism

Answer 18

the difference in apperance between males/females of the same species (colour, size, shape, structure)

Question 19

evidence of sexual dimorphism

Answer 19

ornimentation

Question 20

types of feathers

Answer 20

1. monofilamentous- single fillament, hollow hair like.
2. downy- loose unconnected barbs (used for warmth)
3. contour feathers- hooked barbs on vane. Symmetrical.
4. flight feathers- Asymmetricalvane with hooked barbs. Asymmetrical.

Question 21

Use for feathers

Answer 21

1. display- feathers originally evolved for disply
2. warmth
3. flight

Question 22

origin of flight hypothesis (3)

Answer 22

1. tree down- climbing and gliding, claws used for climbing
2. ground up- running and leaping
3. the compromise- living in trees, used wings to help them run up