synapsids and diapsids

Question 1

what are amniotes?

Answer 1

defined by 3 membranes around the embryo

Question 2

when had amniotes evolved by?

Answer 2

amniotes evolved by late carboniferous

Question 3

how is the lineage defined?

Answer 3

defined by temporal fenestration - holes in the top of the head

synapsid = 1 hole
diapsids = 2 holes
anapsid = no holes

Question 4

what are the most abundant permian land vertebrates?

Answer 4

synapsids

Question 5

whats the purpose of temporal fenstration?

Answer 5

allowed jaw to close as adductor muscle could bulge

Question 6

whats the different with synapsids and sauropsid?

Answer 6

morphological differences in synapsids and sauropsid brains

Question 7

what are cynodonts?

Answer 7

where mammalian jaw, posture and diaphragm originated

Question 8

what was a dinosaurs (sauropsids) posture

Answer 8

bipedal postue

Question 9

what are the differences between synapsid and sauropsid?

Answer 9

lungs

jaws

circulation

kidneys

brains

parental care