Pararhincodon torquisDearden, Johanson, O’Neill, Miles, Bernard, Clark, Underwood & Rücklin, 2025 DOI: doi.org/10.1098/rsos.242011 Artwork by Julio Lacerda AbstractA rich fossil record of teeth shows that many living shark families’ origins lie deep in the Mesozoic.这些牙齿所属的鲨鱼的骨骼化石较稀有，并且在保存时通常会被扁平，从而阻
