Having thickened cranial vault bones, a heavily built face, thick-boned jaws, and thick postcranial bones may have been necessary, or at least an advantage, for the body to cope with these long lifespans
Some creationists see environmental factors and genetic effects, such as the founder effect, genetic drift, and inbreeding, as most likely sufficient sicuro explain the differences con skeletal features between modern humans and so-called cavemen. 37 It has been proposed that there was a period of rapid human diversification beginning during the construction of Babel, resulting in extreme morphological variability durante post-Babel humans repopulating the earth. 38,39 Other creationists believe the stark difference con morphology between robust and anatomically modern humans warrants an explanation verso dato che, that is, not just an acknowledgment that there was considerable variation per features, but why.
Verso subject of importance preciso the creation model is explaining why the skeletons, particularly the skulls, of humans such as Homo erectus (as well as those classified as Neandertals and Homo heidelbergensis), were so rugged or robust compared puro anatomically modern humans
As such, it has been suggested that Homo erectus, Neandertals and the like all arose inizio ‘devolution’ from anatomically modern post-Babel populations-from the genetic consequences of inbreeding, drift, and mutational effects, after splitting off from anatomically modern humans. 40 However, this would have sicuro have happened independently, con per relatively short time, durante many different parts of the world, which seems verso little too coincidental puro be realistic.
Along with per number of other creationists who have contemplated this issue, I consider the robust human forms, such as those with the features observed durante the typical Homo erectus and Neandertal remains, to per general be non-pathological. As such, they were likely humans that were part of the original dispersion that occurred at Babel. Hence, an explanation that is worth considering is that the robust morphology observed in these humans is linked to longevity. According to creationist Carl Wieland:
Hence, one explanation why humans such as Homo erectus, Homo heidelbergensis, and Neandertals, had different morphology compared puro modern humans, particularly per the skull, is that it could reflect changes durante development of these early post-Flood individuals, compared preciso modern humans, possibly linked esatto longevity. 42 A factor that cannot be ignored in a creationist model of human origins is the biblical long lifespans of individuals sopra the pre-Flood world, and puro some extent the early post-Flood earth, as derived from Old Testament records. Sopra the pre-Flood world lifespans of around 900 years appear puro have been common, and even individuals born early post-Flood (within verso few hundred years of the Flood having occurred) are recorded as having lived for hundreds of years. 43,44
If initially (after the Fall) humans were designed esatto live for hundreds of years, then this would most likely have per bearing on development processes and timings. Simply put Esempi di profilo blackplanet, longevity would probably be associated with changes per development, not just the aging process.
If longevity was linked preciso development processes associated with the above-mentioned robusticity, then robust features would be expected to disappear with shorter lifespans, although, as Wieland libretto, “some of the genes coding for some of their distinctive bony anatomy were apparently passed on preciso some of today’s populations”. 45 Hence, robust features do not correlate with the potential for longevity in recent times. Verso genetic mechanism for robusticity would possibly involve the control of hormones related onesto bone growth and maintenance. According preciso Susan Crockford, an evolutionary expert mediante this area, the
Thyroxine (T4) is an important thyroid hormone, and a indivisible thyroid hormone secretion pattern could have existed per people with robust skeletal morphology, such as Homo erectus and the Neandertals, linked onesto the genetic mechanism for long lifespans. Add environmental influences, as well as genetic effects such as genetic drift, and you can possibly account for differences per the many skeletal features observed. This would be not only between early robust post-Flood humans, like Homo erectus, Homo heidelbergensis, and the Neandertals, but also between anatomically modern humans and these early robust post-Flood humans.