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JohannesVIII @johannesviii.bsky.social · 22/03/2026

Kosmoceras sp. (maybe spinosum) swimming in a Callovian Jurassic sea near what's currently Normandy (with Leedsichtys problematicus in the background)

Watercolor illustration mostly in green tones. A big iridescent Kosmoceras ammonite swimming in a shallow Jurassic sea full of sediments, making is difficult to see very far. It has short tentacles, a siphon, and the shell has little round shapes dotting its ridges, in the shape of a spiral. The blurry silhouette of a very large fish swims in the background.