Was Neanderthal Maturation Slower or Faster than Modern Humans? This work is probably based on old work by Chris Stringer on Gibraltar 2 child that concluded the same thing or close to it. Look at pages 79 to 84 in Buried Alive where I discuss the enamel rings or perikymata...if you assume that the enamel rings form in one week (7-10 days) ( as they do today - uniformitarian assumption) and you count them correctly (see my comments on that) then the Neanderthals may have fewer rings which means their teeth developed in less time than ours (i.e., quicker development.)
However, as you can read on page 82, I quote:
"If you start with another set of assumptions it is possible to come up with a different set of conclusions. What if the periodicity of the perikymata was not 7-10 days in ancient man? What if the time between these rings on the enamel was 14-21 days or more and the "daily" increments for each prism took 48 or 72 hours. This would be a whole new ball game. With Biblical assumptions substituted for uniformitarian assumptions, a much longer period of time could be calculated for the 119 elevations....."
So what we have them doing again and again is applying the attributes of Jesus Christ:"the same yesterday, today and forever" (Hebrews. 13:8) to nature. This is common in all of modern science. No catastrophism or any earth changing cataclysms allowed: hence no Flood of Noah either. Charles Lyell started modern uniformitarian assumption thinking.
Peter describes it best in 2nd Peter 3:4-6, "mockers will come...saying, where is the promise of his coming? For ever since the fathers fell asleep , all continues just as it was from the beginning of creation." In 5 he wrote, For when they maintain this it escapes their notice that by the Word of God the heavens existed long ago and the earth was formed out of water and by water through which the world at that time was destroyed, being flooded by water." What escapes their notice? All the sudden catastrophic changes in history, of which Christ's return will be the next and most spectacular.
Finally, If people did live longer than we do, and the Bible says they did, and my cephalometric research supports that longevity, processes would be slowed down in comparison to what they are in us today. Paul wrote about degeneration in Romans 8:20-22. See pages 206 to 208 Buried Alive on bone forming rates.
So postulating uniform rates and inserting them into the scientific equations of man's history is a false assumption and will always lead to wrong conclusions.