Broad Fold, Long Rostrum Group - CHITOTEUTHIDAE / CRANCHIIDAE

　Jaw edge curved hook-like; crest short; upper posterior margin of lateral wall curved inward;
wing shoulder thicken straight ridge-like with a deep narrow groove at jaw point; large beak (LRL=8mm)
--Chiroteuthis caryx
　　

　　Jaw edge gently curved; crest long; no concave at upper posterior margin of lateral wall;
wing shoulder low with a shallow wide groove at jaw point; large beak (LRL=8mm)
--Taonius pavo
　　　

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