PrehistoricWonders Posted July 29, 2020 Share Posted July 29, 2020 Hey, I was looking at this bone I found in Summerville, SC and I’m curious to know what the marks are, I know they’re probably not anything but I figured I’d ask so that I could just stop wondering! TIA! Link to comment Share on other sites More sharing options...
PrehistoricWonders Posted July 29, 2020 Author Share Posted July 29, 2020 These are some pics, the bone is 2 3/8 inches long. TIA! Link to comment Share on other sites More sharing options...
PrehistoricWonders Posted July 29, 2020 Author Share Posted July 29, 2020 @Harry Pristis @digit @Bone Daddy Link to comment Share on other sites More sharing options...
Harry Pristis Posted July 29, 2020 Share Posted July 29, 2020 Could be where a smaller shark dragged its teeth along the bone seeking a place to get a good mouthful of meat. Or, it could be just scuffs from the substrate. Hard to say. 1 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
PrehistoricWonders Posted July 29, 2020 Author Share Posted July 29, 2020 Thanks! Link to comment Share on other sites More sharing options...
Bone Daddy Posted July 30, 2020 Share Posted July 30, 2020 Yeah, that's a tough one. Could be predation or scavenger marks. Could also be just friction scars from mechanical tumbling action in the river or grinding during consolidation and deposition. They are faint and rather insubstantial, so it's hard to tell. The really good predation marks are the obvious ones - they jump out at you. I've seen deep scars on dugong ribs from megalodons that are very striking. The depth, angle, and spacing of marks is also a tell. Deep parallel grooves that are evenly spaced are an obvious example. Link to comment Share on other sites More sharing options...
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