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Cambrian Not-Fishes

submitted by newtboy

1 week 1 day ago

Vetulicolians are weird.
First, they were thought to be an arthropod because of their segmentation, but due to the presence of gill slits and nothocord, Vetulicolians are now placed as stem chordates. Though their exact affinity is still uncertain.

these not-quite vertebrates swam and filter feed in the water column of the early Paleozoic sea, their posterior paddle-like tail propelling the anterior body forward. With no eyes and just a mouth, they must move carefully in search of planktonic food.

most of them vanished from the fossil record by the end of the Cambrian.

Music used:
• HOME – We’re Finally Landing [Synthwa...