Skulls, Skeletons, Canines & Claws

[tigerluver]

(07-04-2020, 02:24 AM)GrizzlyClaws Wrote:

(07-03-2020, 09:55 AM)tigerluver Wrote:

(06-29-2020, 11:47 PM)GrizzlyClaws Wrote: @tigerluver 



The Megalodon fossils being found at the bottom of the river.

https://www.narcity.com/travel/us/fl/tampa/florida-fossil-expeditions-river-tours-let-you-mine-for-megalodon-teeth-and-dino-bones

Could this explain shiny black hue of the Kahayan mandible?

Very well could have similar preservation, nice catch! To my recollection, the Peace river fossils have lots of phosphate that give the fossils a black color. While I don't think there is official peatland in the area the Peace riverbed has been described at "peaty". Organic phosphate is an important part of organic sediments like peat.

Even the Szechuan giant skull was derived from the peatland, but it was stained with the brownish hue instead of the shiny black like those fossils from the bottom of the river.

Maybe the peatlands from the Central China was based on tough soil, not the muddy one from Siberia or at the bottom of the river?

The Szechuan province has mostly the mountainous areas, hence the peatlands over there may be tougher?

In addition to those differences, the temperature may have also influenced the final fossilization. Warm temperatures fasten chemical processes so that could in part explain why southern fossils are more the shade of peat as there was much more mineral exchange by the time the fossil was unearthed. Reply