LAB: Craniates Part 2 Flashcards Preview

• vertebrates that have limbs with digits
• arose from lobe-finned fish
• endoskeleton of bone
  • 1. Axial - skull and vertebrate column
  • 2. Appendicular - girdles

• transitional b/w water and higher land groups
• Dual life cycle - water/land
• Anamniotic eggs - lack shell
• Undergo metamorphosis
• ​Ectothermic

lacks tails, vocalize

• Warty skin (glands)
• parotoid gland ​produce defense chemicals

• Have elongated tails

• Embryos has extra embryonic membranes
• Has shell
• 2 groups
  • 1. Reptiles
  • 2. Mammals

• Skin covered by scales/feathers
• Digits with claws
• Most have 3 chambered heart
• Ectotherms

• Temperature of nest determines sex

• Have 2 part shell:
  • Carapace
  • Plastron

• includes lizards and snakes
• Snakes
  • ​​kill by constriction, suffocation, venom
  • evolved from lizards

• are now classified as reptiles
• evolved from theropod dinosaurs
  • ​​Archaeopteryx

• Endothermic
• Hair
• Mammary glands, milk
• 4 Chambered hearts
• Most live birth with ​placenta