Remarkable Eoceras shaanxiense Fossils Rewrite Cephalopod Evolution
China
Cambrian
Stage 3
fossil
evolution
formation
Researchers have identified tiny fossils from the Shuijingtuo Formation (Cambrian Stage 3) of South China that could transform our understanding of cephalopod evolution. The newly described species, Eoceras shaanxiense, provides the oldest known evidence of a primordial siphuncle, a crucial anatomical feature that enabled cephalopods to regulate buoyancy and eventually become some of the oceans'
03/08/2026
everythingdinosaur