Doliodus is an extinct genus of cartilaginous fish known from the Early Devonian period of what is now New Brunswick, Canada. It includes a single named species, referred to either as D. problematicus
Life reconstruction of Doliodus, based on NBMG 10127 and showcasing fin spines
Cladoselache is an extinct genus of shark-like chondrichthyan from the Late Devonian of North America. It was similar in body shape to modern lamnid sharks, but was not closely related to lamnids or t
Skull and pectoral fins of a C. fyleri specimen on display in Cincinnati
Illustrations from 1894 showing skeletal elements such as fins (1-4), scleral ossicles (5-6), and a lateral line (7)
The Paleozoic fishes of North America BHL14700872