Karly E. Cohen

2 weeks ago | biorxiv.org | Karly E. Cohen |Gareth Fraser |Michael Coates

AbstractChimaeras (Holocephali) are an understudied group of mostly deep-ocean cartilaginous fishes (Chondrichthyes) with unique characteristics that distinguish them from their distant relatives, sharks, skates, and rays. Unlike sharks, chimaeras lack scales and do not have serially replacing rows of serrated teeth crowned with enameloid. Instead, they possess a fused dentition of dentine toothplates.