Dead bellerophontids walking — The short Mesozoic history of the Bellerophontoidea (Gastropoda)

The bilaterally symmetrical gastropods grouped in the extinct superfamily Bellerophontoidea are considered as a typical Early Triassic example of Dead Clade Walking. They survived the Permian–Triassic extinction but disappeared in the Early Triassic. We analysed all Triassic occurrences of bellerophontoideans known from the literature and revised their taxonomic assignment and stratigraphic occurrence. We confirm eight Early Triassic species of...