Data from: A unique feeding strategy of the extinct marine mammal Kolponomos: convergence on sabretooths and sea otters

Z. Jack Tseng, Camille Grohé & John J. Flynn
Mammalian molluscivores feed mainly by shell-crushing or suction-feeding. The extinct marine arctoid, Kolponomos, has been interpreted as an otter-like shell-crusher based on similar dentitions. However, neither the masticatory biomechanics of the shell-crushing adaptation, nor the way Kolponomos may have captured hard-shelled prey, have been tested. Based on mandibular symphyseal morphology shared by Kolponomos and sabretoothed carnivores, we hypothesize a sabretooth-like mechanism for Kolponomos prey-capture, whereby the mandible functioned as an anchor. Torque generated from jaw...
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