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Author Question: Describe bird evolution as known from the fossil record. What will be an ideal ... (Read 209 times)

ts19998

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on: Jul 15, 2018
Describe bird evolution as known from the fossil record. What will be an ideal response?

Question 2

What were pterosaurs? What adaptations did they have for their unique ability? What will be an ideal response?


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IRincones

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Reply #1 on: Jul 15, 2018
Answer to Question 1

The ancestor of birds was probably a small theropod, and some in China have been found with a
featherlike covering. The birdlike Archaeopteryx had dinosaurlike teeth, tail, brain size, and hindlimb
structure, but had feathers and a wishbone, typical of birds. Two fossils younger than Archaeopteryx
have primitive and advanced features



Answer to Question 2

Pterosaurs were flying reptiles. Adaptations for flight included a wing membrane supported by an
elongated fourth finger, light, hollow bones, and the development of the parts of the brain associated
with muscular coordination and sight. At least one has a coat of hair or hair-like feathers, suggesting
that at least this species was endothermic



ts19998

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Reply 2 on: Jul 15, 2018
Gracias!

mammy1697

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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