Problem: Why is the discovery of the fossil Archaeopteryx significant? It supports the A) phylogenetic relatedness of birds and reptiles. B) contention that birds are much older than we originally thought. C) claim that some dinosaurs had feathers well before birds had evolved. D) idea that the first birds were ratites E) hypothesis that the earliest birds were ectothermic.

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Dinosaur Evolution:

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Why is the discovery of the fossil Archaeopteryx significant? It supports the 

A) phylogenetic relatedness of birds and reptiles. 

B) contention that birds are much older than we originally thought. 

C) claim that some dinosaurs had feathers well before birds had evolved. 

D) idea that the first birds were ratites 

E) hypothesis that the earliest birds were ectothermic.

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