W3: L11 = Palaeontology [Mammals] (Prof. Benoit)

Question 1

Mammal attributes? (3)

Answer 1

• Hair.
• Produce milk.
• Divided into 3 groups based on reproductive biology.

Question 2

Groups of mammals based on reproductive biology? (3)

Answer 2

• Placental.
• Marsupial.
• Monotremes.

Question 3

Placental attributes? (4)

Answer 3

• Live birth.
• No pouch.
• Placenta.
• Well-formed when young.

Question 4

Marsupial attributes? (2)

Answer 4

• Live birth.
• Pouch.

Question 5

Monotremes attribute?

Answer 5

Egg laying/Lay eggs.

Question 6

Eg of a Placental?

Answer 6

Cats.

Question 7

Eg of a Marsupial?

Answer 7

Kangaroos.

Question 8

Eg of a Monotreme?

Answer 8

Platypus.

Question 9

Eg of Placental fossil?

Answer 9

Juramaia (Jurassic, China) with 3 molars on each side.

Question 10

Eg of Marsupial fossil?

Answer 10

Sinodelphys (Cretaceous, China) with 4 molars on each side.

Question 11

Eg of Monotreme fossil?

Answer 11

Steropodon (Cretaceous, Australia).

Question 12

Primates attributes? (4)

Answer 12

• Binocular vision.
• Bigger brain.
• Opposable thumb.
• Nails (instead of claws or hooves).

Question 13

Binocular vision?

Answer 13

= eyes are facing forward to enable 3-D vision.

Question 14

Ecology of primates? (2)

Answer 14

• Arboreal.
• Tropical.

Question 15

Timespan of primates?

Answer 15

Cenozoic.

Question 16

Lemurs & bushbabies distinguishing attribute?

Answer 16

Have a wet nose.

Question 17

Monkeysdistinguishing attribute?

Answer 17

Have a dry nose.

Question 18

Apes (including hominins) distinguishing attribute?

Answer 18

Have a coccyx.

Question 19

Timespan of Apes (including hominins)?

Answer 19

Neogene only.

Question 20

Oldest ape?

Answer 20

Proconsul (Miocene, East Africa).

Question 21

Wet nose?

Answer 21

=

Question 22

Dry nose?

Answer 22

=

Question 23

Exceptions to abovementioned organisms? (2)

Answer 23

• Red meerkats.
• Humans.