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There were a few fish of the Ordovician, they were all jawless, and were only simple Chordates; but despite the simplicity, they were an evolutionary miracle, seeing they led to the complex vertebrates.
Some examples would be:
-Astraspis
-Thelodonti
-Pteraspida
-Stroinolepis
Eloise Upton
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When did the diversification of jawless fish occur?
Late Ordovician
Fossils of fish appeared approximately 500 mya during the what?
Fish first appeared in the Ordovician Period.
Ordovician time period?
The Ordovician was in the Paleozoic era, and lasted from 505 to 438 million years ago. Trilobites were common then, and the earliest jawless, bony fish.
What things live in the ordovician period?
Primitive arthropods, fish, orthocones and sea scorpiond.
What were the Ordovician mammals?
No mammals existed in the Ordovician
What was the first sea animal in the Ordovician period?
The exact date of the earliest sea life is currently unknown, but life was well established by the Ordovician, which started 488 million years ago. Trilobites, corals and brachiopods and privative fish were common.
What is the dominant plant of the Ordovician period?
Algae was the dominant plant of the Ordovician. There were little to no other plants (other then algae) during the Ordovician. In the Ordovician, the common types of algae were Stromatolites (Blue green algae), and Tetradium (Red algae).
What era is the fish in?
If you are asking what era the fish ORIGINATED, then your answer is the Cambrian Period, which was during the Paleozoic Era (544-245 million years ago). They started off as invertebrates, however. The first vertebrate that was a fish was the jawless fish in the Ordovician period. The first vertebrate that was a fish was the jawed fish in the Silurian period.
How long did ordovician last?
The Ordovician lasted for 47 million years from 490 to 443 Million Years Ago.
How do finger structures provide support for evolution?
All vertebrates, from Ordovician fish onwards, have the same basic limb structure. This implies that they all share a common ancestor.
How long did Ordovician period last?
The Ordovician lasted for 47 million years from 490 to 443 Million Years Ago.
What are some of the Ordovician animals?
nautiloids
