Thomas.Dodson Posted November 11, 2020 Share Posted November 11, 2020 Hi all, I've been working on the pit 11 concretions I collected this summer and some difficult identifications have piled up. These might not be preserved enough to be identifiable but they seem preserved decently enough that some people might have a better idea for identification. Any help is appreciated. Measurements are the lengths of the fossil and not the concretion. The first fossil measures 30 mm across. This seems like it's probably just a weird shrimp molt? Fossil #2 measures 15 mm across. I don't hold out much hope for this one as it's rather broken up and lacks detail but it superficially resembles a Dithyrocaris sp. carapace. Fossil #3 is quite possibly not a fossil at all but the texture and color difference in the concretion is distinct enough to consider the possibility. It is 20 mm tall and 15 mm wide at widest point. 1 Link to comment Share on other sites More sharing options...
Thomas.Dodson Posted November 11, 2020 Author Share Posted November 11, 2020 This fossil measures 25 mm tall from the tip of the longest projection. 1 Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 11, 2020 Share Posted November 11, 2020 @Nimravis in the man you need. 1 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
RCFossils Posted November 12, 2020 Share Posted November 12, 2020 I would agree that the first specimen is a shrimp molt #2 might be a seed (hard to tell from the pictures) #3 I believe this is likely a small section of a rare algae named Thallites dichopleurus #4 is a shrimp tail (likely Acanthotelson) 6 Link to comment Share on other sites More sharing options...
Thomas.Dodson Posted November 12, 2020 Author Share Posted November 12, 2020 @RCFossils Very nice, thanks! Have you ever seen an Acanthotelson that big before? I noted the similarity to Acanthotelson when I was trying to find it out earlier but all the specimens I saw were quite small. The tail alone is 25 mm. 2 Link to comment Share on other sites More sharing options...
RCFossils Posted November 12, 2020 Share Posted November 12, 2020 Yes, It is rare but Acanthotelson can get quite large. Here is a similar example from my collection for comparison. 4 Link to comment Share on other sites More sharing options...
RCFossils Posted November 12, 2020 Share Posted November 12, 2020 5 Link to comment Share on other sites More sharing options...
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