Rise of Marine Reptiles

Question 1

Why was aquatic adaptation common in Mesozoic reptiles?

Answer 1

because of their metabolism

Question 2

what was metabolism of Mesozoic reptiles

Answer 2

ecototherm (cold blooded)

Question 3

Why would ectotherms adapt to the water instead of the land?

Answer 3

water temperatures don’t shift so fast
water temperatures are more stable than land temperatures
so cold blooded animals could use the water to have a certain body temperature
land temps drop fast at night once the sun is set

Question 4

What is morphology?

Answer 4

body structures

Question 5

what is a helpful model or image to help picture the body morphology of an aquatic reptile?

Answer 5

like a submarine or boat bottom , oars , paddles

Question 6

What type of body did aquatic reptiles have

Answer 6

long …. fusiform ( like fuselage of plane) like a submarine shape

Question 7

what is fus i form

Answer 7

tapers off at both ends like submarine

Question 8

what were aquatic reptile tails like?

Answer 8

elongated (lengthened ) and flattened on the sides (laterally)

Question 9

What were limbs of aquatic reptiles like?

Answer 9

modified
broad flattened
flippers

Question 10

what was the happened to head length of aquatic reptiles?

Answer 10

head elongated

Question 11

What was most common tooth shape of aquatic reptiles

Answer 11

conical (cone shaped teeth)

Question 12

What were conical teeth good for eating

Answer 12

fish soft animals that could tear apart

Question 13

how many tooth types in aquatic reptiles and what were they?

Answer 13

2

conical and flat

Question 14

What were flat massive teeth good for in aquatic reptiles

Answer 14

breaking up grinding shells

Question 15

what did aquatic reptiles with flat teeth eat

Answer 15

molluscs (had shells to grind)

Question 16

The were 6 important groups of aquatic reptiles in the Mesozoic era separated across triassic jurassic and cretaceous what memory prompt might help?

Answer 16

Maybe like a pink crocodile at night
P N Ic C P M
1. placoderm (triassic)
2. nothosarus (triassic)
3.iCthyosaurus (late triassic-cretaceous)

4. crocodile (start triassic as terrestrial)
   adapted to marine jurassic
5. P leisosaurs (jurassic to cretaceous)
6. M ososaurs (cretaceous)

Question 17

what does root of plac in placo derm mean?

Answer 17

armor covering like plaque on teeth

Question 18

What were placoderms teeth like?

Answer 18

rounded blunt (not pointy)
so what eat? good at crushing
so ate shells

Question 19

Which aquatic reptile of group first to invade sea?

Answer 19

notho saurus (maybe think north star that seaman look for

Question 20

What kind of limbs did notho saurs have?

Answer 20

paddles (first in sea after all makes sense)

Question 21

What did nothosaurs give rise to?

Answer 21

pleisosaurs

Question 22

What does pleiso saur mean in greek?

Answer 22

nearer to lizard so the pleiso saur was more and more reptile like as amphibians replaced

Question 23

What was body of pleiso saur like?

Answer 23

long neck long tail large( flipper like) limbs

Question 24

which mososaur mean??

Answer 24

just means found near moso river

Question 25

What size was mososaurus

Answer 25

giant with long laterally (side) flattened tail for swimming
maybe think moso live massive/mossove

Question 26

which aquatic reptile had a totally aquatic (fish like) body?

Answer 26

icthy o saurus (had porpoise like) fusiform body

Question 27

How did ichthyosaurs give birth (hint a lot like porpoises do)

Answer 27

icthyosaurs gave live birth.

Question 28

What did crocodiles evolve from ?

Answer 28

theodonts in triassic

Question 29

what were first crocodiles?

Answer 29

land animals

Question 30

When did some crocodiles first adapt to marine life?

Answer 30

jurassic (think jurassic park now crocodiles in the water maybe)