BobWill Posted March 11, 2019 Share Posted March 11, 2019 I collected with @ rwise in the Goodland Limestone, Lower Cretaceous of Cooke County Texas today. I found this semi-circular fossil that may be a burrow. Looking closer at the large end there was a dotted line, lower left. Closer... Closer... Closer... That's a mm scale and this is the best my camera will do close-in... Any ideas? Link to comment Share on other sites More sharing options...
Rockwood Posted March 11, 2019 Share Posted March 11, 2019 Looks for all the world like a lobstah antenna. Link to comment Share on other sites More sharing options...
Rockwood Posted March 11, 2019 Share Posted March 11, 2019 At that scale, come to think of it, maybe we need to summons coprolite help ? 1 Link to comment Share on other sites More sharing options...
caldigger Posted March 11, 2019 Share Posted March 11, 2019 Shrimp tend to be small. Link to comment Share on other sites More sharing options...
Rockwood Posted March 11, 2019 Share Posted March 11, 2019 @Carl Did you notice this one ? Link to comment Share on other sites More sharing options...
Carl Posted March 12, 2019 Share Posted March 12, 2019 23 hours ago, Rockwood said: @Carl Did you notice this one ? I did but I have no worthwhile thoughts Link to comment Share on other sites More sharing options...
BobWill Posted March 12, 2019 Author Share Posted March 12, 2019 Of course some posters on Facebook wanted the dots to be vertebrae and I won't declare them wrong yet, but another suggestion was bivalve teeth. I will try to remove some matrix and get a better close-up to post here soon. Link to comment Share on other sites More sharing options...
abyssunder Posted March 12, 2019 Share Posted March 12, 2019 Bob, are you sure that the semi-circular fossil is a burrow? Somehow it reminds me of caprinid rudists. " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Al Dente Posted March 12, 2019 Share Posted March 12, 2019 I’ve seen Paleozoic rocks with fenestrate bryozoans that look like this. A break across the bryozoan leaves alternating fossil and matrix filled hole. Link to comment Share on other sites More sharing options...
BobWill Posted March 12, 2019 Author Share Posted March 12, 2019 1 hour ago, abyssunder said: Bob, are you sure that the semi-circular fossil is a burrow? Somehow it reminds me of caprinid rudists. I'm not sure but I did forget to mention that it has a round cross-sectional profile. The central portion looks like it is just matrix but I could be wrong about that. 22 minutes ago, Al Dente said: I’ve seen Paleozoic rocks with fenestrate bryozoans that look like this. A break across the bryozoan leaves alternating fossil and matrix filled hole. That might work. Were there fenestrate bryozoans in the Creatceous? Link to comment Share on other sites More sharing options...
BobWill Posted March 14, 2019 Author Share Posted March 14, 2019 I've decided I need to find someone else to try to remove some of the matrix from this and it probably needs consolidation too. I got slightly better close-ups though and will try to get something even better soon. Link to comment Share on other sites More sharing options...
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