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What are two adaptations that enabled early fishes to dominate the oceans?
Wiki User
∙ 13y ago
The ability to lay hundreds of eggs. And probably the fact that they adapt to anywhere because there aren't that many different terrains underwater
Wiki User
∙ 13y ago
Anonymous
Within another 50 million years, jawless fishes had diversified into a great variety of species.
The major group was the
ostracoderms which had
primitive fins and massive
plates of bony tissue on their body.
Jawless fishes dominated the oceans for about 100 million years, until they were replaced by new kinds of fishes that were hunters.
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