madtrupps Posted April 30, 2017 Share Posted April 30, 2017 Hi all, I like to collect rocks off the beach and while I'm usually skeptical of anything that looks like it has organic patterns, this one has just totally stumped me and my curiosity is killing me! It looks like it might have belonged to something living but I really don't know. Found in Albert Beach, Lake Winnipeg, Manitoba, washed up in the sand among a bunch of other similar sized rocks. The tooth-like structure is about half an inch tall, and the rock itself is a little over half an inch long. The tooth-like structure has these vertical stripes all around while there are scale-like patterns on the bulbous end. Can't tell if plant or animal (if organic at all). Please help! I'm dying to know. Will happily take more photos on request. Thank you! Link to comment Share on other sites More sharing options...
Kane Posted April 30, 2017 Share Posted April 30, 2017 This has the look of a worn tabulate coral. 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
madtrupps Posted April 30, 2017 Author Share Posted April 30, 2017 10 minutes ago, Kane said: This has the look of a worn tabulate coral. Did some googling and found a paper on tabulate corals from southern Manitoba - the hexagonal pattern resembles the bulbous end, but it looks like the pattern is inset into the stone (and filled with debris) rather than protruding? Link to comment Share on other sites More sharing options...
Rockwood Posted April 30, 2017 Share Posted April 30, 2017 Does it look like this ? https://en.wikipedia.org/wiki/Hexagonaria Link to comment Share on other sites More sharing options...
madtrupps Posted April 30, 2017 Author Share Posted April 30, 2017 7 minutes ago, Rockwood said: Does it look like this ? https://en.wikipedia.org/wiki/Hexagonaria Not quite, it's lacking the radial striping inside the "scales". (Thank you so much for the replies so far though! I'm still digging...) Link to comment Share on other sites More sharing options...
Rockwood Posted April 30, 2017 Share Posted April 30, 2017 One of us is confused. It wouldn't be the first time that it turned out to be me though. Perhaps another photo or two might help. The conical shape appears quite radial to me. There could be multiple types of coral here. Link to comment Share on other sites More sharing options...
Kane Posted April 30, 2017 Share Posted April 30, 2017 11 hours ago, madtrupps said: Did some googling and found a paper on tabulate corals from southern Manitoba - the hexagonal pattern resembles the bulbous end, but it looks like the pattern is inset into the stone (and filled with debris) rather than protruding? It may depend on the erosion; I've encountered worn specimens where the septa protrude, recess, or even are level with the surface. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Micah Posted May 2, 2017 Share Posted May 2, 2017 lol I would just have said horn coral and left it there... Link to comment Share on other sites More sharing options...
Rockwood Posted May 2, 2017 Share Posted May 2, 2017 I'm probably the last get this, but just in case anyone is still struggling. The radial pattern actually represents the budding pattern of the polyps within the colony, correct ? Link to comment Share on other sites More sharing options...
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