Pterosaurs Are an Extinct Group of Flying Reptiles

question 121

Multiple Choice

Pterosaurs are an extinct group of flying reptiles. Paleontologists accept that pterosaurs evolved flight independently of birds. What evidence BEST supports such a conclusion?

• A)Pterosaurs don't have feathers.
• B)Pterosaurs have teeth, but birds don't.
• C)Phylogenetic analyses place pterosaurs as the sister group of all dinosaurs.
• D)Pterosaurs first appeared during the Triassic Period, earlier than the oldest known birds.

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