Other questions in this quiz

2. Pachyophis

  • mid cretaceous marine hind limbed snake, thethys sea
  • fore and hind limb snake, cretaceous, stem snake poss terrestrail
  • mid cretaceous, limbed, terrestrial snake,

3. Synapomorphies of Lepidosaurs

  • Caudal autonomy, Paired hemipenes- lined with ectoderm, skin shedding, epiphysis
  • leathery skin, single hemipenes, skin shedding
  • epiphysis

4. Najash

  • fore and hind limb snake, cretaceous, stem snake poss terrestrail
  • mid cretaceous, limbed, terrestrial snake,
  • mid cretaceous marine hind limbed snake, thethys sea

5. evidence for burrowing snake origin

  • elongation of body
  • degeneration fo middle ear and ear drums, big stapedial foot plate, shape of semi circular canals, eyes, braincase, tail
  • limbed marine snakes

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