Ptychodus Shark Fossils—Indirect Evidence for Antediluvian Longevity?
BY
JAKE HEBERT, PH.D.
|
MONDAY, FEBRUARY 16, 2026
In Journal of Creation. 38 (3): 7-9.
Abstract
New research shows that giant fossil sharks in the genus Ptychodus had a morphology similar to that of the extant porbeagle shark, Lamna nasus. Previous research showed that Ptychodus likely experienced delayed maturation compared to extant sharks. This clarification of the Ptychodus body shape strengthens the argument for a prolonged growth interval. This may be of interest to creationists because there is evidence that prolonged growth intervals and giantism are positively correlated with greater longevity in living animals.
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