Early Evolution of Chondrichthyes
Earliest chondrichthyans were very shark-like in appearanceóbut had broad-based pectoral fin attachments and no rostrum
Chondrichthyans soon diversified into an array of sometimes rather weird-looking groups
Early chondrichthyans also gave rise to Holocephali (chimeras) and Elasmobranchii (modern sharks, skates, and rays)