252mya: Plectronoceras Artwork by Franz Anthon…

252mya:

Plectronoceras

Artwork by Franz Anthony / @franzanth

The 501 million years old Plectronoceras had an air-filled chambered shell that helped it stay buoyant and not tied to the ocean floor, setting cephalopods apart from their close relatives, the snails.

252MYA creates custom-made artwork for private collections and editorial, scientific, or educational project.