Correction: Aegicetus gehennae, a new late Eocene protocetid and the transition to tail-powered swimming in whales

Aegicetus holotype CGM 60584 records loss of a weight-bearing sacroiliac joint, posterior vertebral elongation and limb reduction; a shift toward mid-body-and-tail propulsion is inferred, not directly observed, and a fluke is not preserved.

CGM 60584 defines Aegicetus gehennae and is routed under Protocetidae through Georgiacetinae; this classification is not a direct ancestor statement.

The profile represents lower Gehannam Formation material from Wadi Al Hitan and does not establish the full range of Aegicetus.

Marine predation and tail-driven swimming are anatomical inferences; prey, performance and a tail fluke were not directly preserved.

CGM 60584 preserves much associated postcranium with an elongate trunk, unfused sacrals, reduced limbs and no weight-bearing sacroiliac joint.

The 37.71 Ma display point exposes a boundary translation amid conflicting stratigraphic evidence and is not an exact specimen date, FAD or LAD.