In Late Pleistocene Body Size Reduction: Evidence of a Post-Flood Decline in Longevity? Journal of Creation. 38 (1).

Abstract

Even after the Flood, the Genesis patriarchs routinely experienced lifespans of hundreds of years (Genesis 11). Hence, biblical creationists should be interested in possible scientific corroboration for this extreme longevity. Whatever focus or factors enabled extreme human longevity also likely enabled greater animal longevity. Longevity studies have shown that greater longevity is often associated with larger adult body sizes and prolonged intervals of maturation. Hence, one might expect longer-lived people and animals to be larger than those with shorter lifespans. Thus, the ubiquity of giantism in the fossil record is noteworthy, as is evidence of decreasing body sizes during and after the post-Flood Ice Age. This evidence of body size reduction is worldwide and especially strong for mammals, but there is some evidence for body size reduction in other taxa. Because Pleistocene giantism was found even in places far from the high-latitude ice sheets, Bergmann's rule, in and of itself, is likely an insufficient explanation. Because of the body size/longevity link, body size reduction is likely indirect evidence of declining longevity in the immediate post-Flood world.

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