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Evolution

Question
CBSEENBI12003347
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Which one ofthe following is reptilian ancestor of birds

  • Hesperornis

  • Archaeopteryx

  • Ichthyornis

  • Lycaenops

Solution

B.

Archaeopteryx

D.

Lycaenops

The first fossil birds found in the rocks of Jurassic period belonged to genera Archaeopteryx and Archaeornis. These are considered as reptilian ancestors of birds. It was about the size of a crow and possessed feathers and wings but had a long reptilian tail very much unlike the modern birds and a toothed beak. Fossils ofHesperornis, an aquatic diving bird, and Ichthyornis, a powerful flying bird, have been found from Cretaceous.

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