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So, we headed up the Hill 400 line today and I noticed a really interesting formation on the left side of the tunnel on the ledge everyone uses to pull. It was perfectly flat, from the perspective of looking down at the ledge. It was circular in shape, maybe 8-10" in diameter. It was creamy white and it had what looked very much like the markings on an alligator's belly skin.
Just wondering if it might have been an alligator fossil and if anyone else has seen this formation.
Dominick
https://scontent-dfw5-1.xx.fbcdn.net...a6&oe=5B826E79
Are you talking about this? It's an echinoderm fossil. Like a sand dollar.
More info on it: https://ww2.kqed.org/quest/2013/02/2...llssanddollar/
I?ll have to look for it next time. Don?t think I?ve noticed it before.
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Very cool, thanks. I've always wondered what that was. My best guess was turtle. Glad to know, and it makes sense -- I've seen lots of tiny sand dollars in there.
They're all over the place and I also assumed they were the bottom shell from a turtle. But then i wondered why there were so many bottom shells but not top.Quote:
Originally Posted by PsychDiver
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Ginnie unfortunately has a history of fossils disappearing/damaged when the location is announced publically.
Thanks! Yes I do believe this is the type of fossil I saw.Quote:
Originally Posted by CHartmann
Wow, didn’t realize it was okay to pull and glide in the Hill 400 tunnel now...
Safe diving,
Rich
To be clear, I was not pulling and gliding. It is obvious from the smoothly polished, white edges of the shelf that it must be common practice.Quote:
Originally Posted by Rich
It's all good, your "everyone uses to pull" just rubbed me the wrong way... :)
Safe diving,
Rich
Thanks! I never knew this, I always thought it was a turtle also.Quote:
Originally Posted by CHartmann
my guess would be turtle by the look of the outlines on the shell