Reptiles And Dinos

Question 1

Sauropsida

Answer 1

Amniotes including birds, reptiles and ancestors.

Question 2

Aspiration Pumping

Question 3

Mesosaurs - Fossils:

Answer 3

-Among first evidence of continental drift during late carboniferous and early Permian.

Question 4

Mesosaurs - Skull:

Answer 4

• lacked temporal fenestrae
• skull type: primitive amniote

Question 5

Mesosaurs - Features:

Answer 5

• long necks
• elongated snout with teeth
• paddle shaped feet with long digits
• laterally compressed tail
• long limbs

Question 6

Parareptilia:

Answer 6

• early reptiles
• earliest fossils from Permian Deposits.
• Herbivores
• medium sized (2.5 m)
• Swollen neural arches, expanded transversely
• digits articulated with ankle bones.
• went extinct by end of Triassic.

Question 7

What Are The 2 Decendents Of EUREPTILIA?:

Answer 7

1. Captorhinidae (basal form)
2. Diapsida

Question 8

Captorhinidae (Basal Form)

Answer 8

• Lack temporal fenestrae
• lizard like
• small (20cm)
• ossified skeleton
• Major linages among Diapsida

Question 9

What Are The Four Subclasses Of Diapsida?:

Answer 9

1. Archosauromorpha
2. Euryapsida
3. Lepidosauromorpha
4. Testudinata

Question 10

Archosauromorpha

Answer 10

• Reduced forelimbs
• Hindlimbs carry body weight
  -bipedalism
• ant orbital fenestra