Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: brytlea

Yeah....I saw that later. Evidently, it’s the melanin that gives it the color.

That wouldn’t mean that the melanin is still intact in the fossil....could be degraded...depolymerized...I don’t know enough about melanin to know what gives it “pigment” qualities.


284 posted on 08/21/2009 8:42:24 AM PDT by ElectricStrawberry (Didja know that Man walked with vegetarian T. rex within the last 4,351 years?)
[ Post Reply | Private Reply | To 283 | View Replies ]


To: ElectricStrawberry

Yeah, I wish I knew more chemistry. But it would appear that melanin (or at least part of it) does not break down over long periods of time.


286 posted on 08/21/2009 9:53:49 AM PDT by brytlea (Jesus loves me, this I know.)
[ Post Reply | Private Reply | To 284 | View Replies ]

To: ElectricStrawberry
It's light absorbion in the visible range (400-700 nm) that gives the form of melanin its color from yellow to black.

It also absorbs light in the ultraviolet which is why lots of melanin (eumelanin) in the skin helps to protect from sunburn

287 posted on 08/21/2009 11:27:08 AM PDT by count-your-change (You don't have be brilliant, not being stupid is enough.)
[ Post Reply | Private Reply | To 284 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson