A single associated skeleton preserves terrestrial limb proportions alongside traits used to infer freshwater swimming.
Represented range24–20 Ma
RegionsHaughton Formation, Devon Island, Nunavut, Canada
CladesPinnipedimorpha · Puijila
Claim ledger
morphology · high
Associated skeleton NUFV 405 directly documents a terrestrial–aquatic anatomical mosaic in an early Miocene lake setting; swimming mode, tree position and transition geography remain bounded interpretations.