Tiktaalik either crawled or paddled in shallow tropical streams about 380 mya,during the late Devonian period.These shallow waters often became anaerobic.What selective advantage would Tiktaalik have under these conditions?

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Quizplus · Accepted Answer

Tiktaalik had both gills and primitive lungs, allowing it to breathe air when in anaerobic conditions, giving it a selective advantage.

Tiktaalik Either Crawled or Paddled in Shallow Tropical Streams About