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From an old collection we got this strange Trilobite. I think it was found and imported to Germany around 1980 - 1985. Should come from Yunnan-Province in China (I only know it comes from china, did some research in the net and think it is a Yunnan-one). Lenght is around 18 cm (7"). Has short spines at the end of the pleural segments. The cephalon has been badly prepared, surface is a bit destroyed but the rim fits. Pygidum looks rounded, but under a microscope I could see, the end is not prepped and under the surface. Will do the work on it next time... What do you think about the genus? Before I start the prep-work I love to know if it has spiny ends, Looks not easy to prep... thanks for comments!

525-Million-Year-Old Fossil Solves Debate Over Brain Evolution University of Arizona, November 25, 2022 https://scitechdaily.com/science-textbooks-wrong-525-million-year-old-fossil-defies-common-explanation-for-brain-evolution/ https://www.sciencedaily.com/releases/2022/11/221125132137.htm https://www.technologynetworks.com/neuroscience/news/525-million-year-old-fossil-solves-debate-over-brain-evolution-367879 The paywalled paper is: Nicholas J. Strausfeld, Xianguang Hou, Marcel E. Sayre, and Frank Hirth, 2022, The lower Cambrian lobopodian Cardiodictyon resolves the origin of euarthropod brains. Science, 378 (6622), pp. 905-909. 905 DOI: 10.1126/science.abn6264 https://www.science.org/doi/10.1126/science.abn6264 Yours, Paul H.

There is a Vetulicola (partial) somewhere on this piece, I have been looking at it for awhile but I can't really spot where it is on here, anyone more familiar with Chengjiang fossils able to spot it or id for sure as vetulicola?

Naked chancelloriid from the lower Cambrian of China Strange sponge-like fossil creature from Chengjiang deposits of Yunnan Province, China University of Leicester, June 19, 2018 https://www.sciencedaily.com/releases/2018/06/180619230853.htm https://www2.le.ac.uk/offices/press/press-releases/2018/june/strange-nude-fossil-creature-from-half-a-billion-years-ago The paper is; Cong, P.Y., Harvey, T.H., Williams, M., Siveter, D.J., Siveter, D.J., Gabbott, S.E., Li, Y.J., Wei, F. and Hou, X.G., 2018. Naked chancelloriids from the lower Cambrian of China show evidence for sponge-type growth. Proc. R. Soc. B, 285(1881), p.20180296. doi: 10.1098/rspb.2018.0296 http://rspb.royalsocietypublishing.org/content/285/1881/20180296 I could not an online PDF File of the above paper. I could only find; Bengtson, S. and Collins, D., 2015. Chancelloriids of the Cambrian Burgess Shale. Palaeontologia Electronica, 18(1), pp. 1-67. https://palaeo-electronica.org/content/index.php?option=com_content&view=article&id=1031:chancelloriids&catid=146:2015&Itemid=567 and Hughes, N.C., Peng, S., Bhargava, O.N., Ahluwalia, A.D., Walia, S., Myrow, P.M. and Parcha, S.K., 2005. Cambrian biostratigraphy of the Tal Group, Lesser Himalaya, India, and early Tsanglangpuan (late early Cambrian) trilobites from the Nigali Dhar syncline. Geological Magazine, 142(1), pp. 57-80. https://pdfs.semanticscholar.org/1aba/719f7a72ffbd6006df6f596c749ac20b975b.pdf http://earthsciences.ucr.edu/docs/Hughesetal2005Tal.pdf http://trilobyte.ucr.edu/hughespubs.html Yours, Paul H.