Peat Burns Posted May 10, 2018 Share Posted May 10, 2018 @piranha et al. This specimen was collected in the 1880s. It's mostly now an internal cast/mold, the exoskeleton having probably fallen off over the years. I had initially, and hastily, assumed it was Isotelus, but after receiving some Dipleura parts and matrix from @Darktooth today, I'm thinking this is actually Dipleura. Can you confirm or refute? Link to comment Share on other sites More sharing options...
doushantuo Posted May 10, 2018 Share Posted May 10, 2018 Please view this as a general remark,NOT intended to be an id: Burmeisterid(Simoes/RBras.P/2009)/exfoliated(weathered specimen(I think): Sandfordaustraliatrilobithomalonoti.pdf This paper(3,6 Mb,in miscellaneous libraries here,I presume)contains material that might aid in interpreting this. 2 Link to comment Share on other sites More sharing options...
Jeffrey P Posted May 10, 2018 Share Posted May 10, 2018 That appears to match Dipleura specimens that I've collected. The absence of markings on the pygidium is for me the best indicator as well as the broad uniform thorax segments.. 2 Link to comment Share on other sites More sharing options...
Peat Burns Posted May 10, 2018 Author Share Posted May 10, 2018 3 minutes ago, Jeffrey P said: That appears to match Dipleura specimens that I've collected. The absence of markings on the pygidium is for me the best indicator as well as the broad uniform thorax segments.. Thank you Link to comment Share on other sites More sharing options...
doushantuo Posted May 10, 2018 Share Posted May 10, 2018 from Tomczykowa(APPolon./1975*) *free access,presumably in miscelllaneous libraries here 2 Link to comment Share on other sites More sharing options...
Darktooth Posted May 10, 2018 Share Posted May 10, 2018 @Peat Burns After viewing this pic I agree it is Dipleura. The pic you sent last night made the pygidium look more round. In this current pic I can tell that part of the pygidium is missing. Plus the details of the body segments are more easily seen. 1 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
DevonianDigger Posted May 10, 2018 Share Posted May 10, 2018 I'm going +1 on Dipleura. 1 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...
Malcolmt Posted May 10, 2018 Share Posted May 10, 2018 Not an iso 1 Link to comment Share on other sites More sharing options...
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