Mammals (Vertebrates) Flashcards
1
Q
Give six synapomorphies of mammals
A
Hair, mammary glands, 3 ear ossicles, 7 cervical vertebrae, fused pelvis, heterogametic males
2
Q
Why do mammals have sweat glands?
A
Homeothermy (and endothermy)
3
Q
Give five biological contributions of mammals
A
Placental (some), heterodonty, secondary palate, turbinate bone in nose, brain enlargement
4
Q
From what did mammals evolve?
A
Permian synapsids. Had arched palate and canine-like teeth
5
Q
Describe early mammals
A
Late Triassic. Hair, mammary glands, teeth sequence as they age.
6
Q
Describe the mammal order Monotremata
A
Egg-laying, enlarged neopallium
7
Q
Describe the mammal subclass Theria
A
Modified brain case. Includes Clades Eutheria and Marsupials.
8
Q
Describe the mammal clade Eutheria
A
Placental
9
Q
Describe the mammal clade Marsupials
A
Pouched
