Eochondrosteus
Eochondrosteus is a genus of extinct marine actinopterygian (ray-finned fish), comprising one species, E. sinensis from the Early Triassic strata in Gansu Province, China. It is suggested to be the most basal acipenseriform. It was originally described in 2005, and then redescribed in 2020 in Chinese. Other authors have considered the placement of Eochondrosteus within the Acipenseriformes as tentative, or have expressed doubt about its placement in the order