Rockwood Posted October 23, 2016 Share Posted October 23, 2016 Found in Maine glacial material. It was among Mucrospirifers, in what seems likely to have been a marine river delta (Taratine formation). Link to comment Share on other sites More sharing options...
Archie Posted October 23, 2016 Share Posted October 23, 2016 Could it be a section of bryozoan? Regards, Link to comment Share on other sites More sharing options...
TqB Posted October 23, 2016 Share Posted October 23, 2016 6 minutes ago, Archie said: Could it be a section of bryozoan? Regards, I think it probably is. Tarquin Link to comment Share on other sites More sharing options...
DevonianDigger Posted October 23, 2016 Share Posted October 23, 2016 +1 for bryozoan Jay A. Wollin Lead Fossil Educator - Penn Dixie Fossil Park and Nature Reserve Hamburg, New York, USA Link to comment Share on other sites More sharing options...
Rockwood Posted October 23, 2016 Author Share Posted October 23, 2016 Are you suggesting that there is zooid structure in the area highlighted in blue ? I can't make out any, and it would typically seem like the area most likely to be preserved. My thought was that the body fossil is only actually the cavity highlighted in red and the blue is an internal mold. Link to comment Share on other sites More sharing options...
Rockwood Posted October 23, 2016 Author Share Posted October 23, 2016 Here is the counterpart. Almost forgot I had it. It was in a lighter piece of rock so I brought it home some time ago. Link to comment Share on other sites More sharing options...
TqB Posted October 24, 2016 Share Posted October 24, 2016 12 hours ago, Rockwood said: Are you suggesting that there is zooid structure in the area highlighted in blue ? I can't make out any, and it would typically seem like the area most likely to be preserved. My thought was that the body fossil is only actually the cavity highlighted in red and the blue is an internal mold. I agree the body fossil is the red highlighted section. I don't know if there are any tubular bryozoan colonies but it could be an encrusting one where the host has dissolved/decayed. Tarquin Link to comment Share on other sites More sharing options...
Rockwood Posted October 24, 2016 Author Share Posted October 24, 2016 I considered that possibility. In fact it's easy to picture the encrusted being a helispiral gastropod, but it appears to place the bryozoan on the inside. Does that seem likely ? How would the colony survive intact when the shell became little more than a shadow of concretion ? Link to comment Share on other sites More sharing options...
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