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Why Did the Placoderms Go Extinct?

Sophia Al-Mansoor • • 6 min read
Why Did the Placoderms Go Extinct?

It was thought for a time that placoderms became extinct due to competition from the first bony fish

bony fish
Bony fishes, class Osteichthyes, are characterised by bony skeleton rather than cartilage. They appeared in the late Silurian, about 419 million years ago. The recent discovery of Entelognathus strongly suggests that bony fishes (and possibly cartilaginous fishes, via acanthodians) evolved from early placoderms.
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and early sharks, given a combination of the supposed inherent superiority of bony fish and the presumed sluggishness of placoderms.

How did the placoderms go extinct?

It was thought for a time that placoderms became extinct due to competition from the first bony fish and early sharks, given a combination of the supposed inherent superiority of bony fish and the presumed sluggishness of placoderms.

Are placoderms extinct?

Placoderms were the dominant fish of marine and freshwater environments during the Devonian Period but became extinct at the end of the Devonian. For sixty million years they had become one of the most successful groups of fish throughout history.

Sophia Al-Mansoor
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Sophia Al-Mansoor

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.