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Author Question: Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins a (Read 1086 times)

hummingbird

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on: Jul 7, 2013
Ichthyosaurs were aquatic dinosaurs. Fossils show us that they had dorsal fins and tails, as do fish, even though their closest relatives were terrestrial reptiles that had neither dorsal fins nor aquatic tails. The dorsal fins and tails of ichthyosaurs and fish are
A) homologous.
B) examples of convergent evolution.
C) adaptations to a common environment.
D) Three of the responses above are correct.
E) Two of the responses above are correct.


camila

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Reply #1 on: Jul 9, 2013
Hello

E is the answer for sure ;)


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