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  1. Morning all, my second post here after the presentation, and hope i'm doing everything right! Here the tricky question: I have received this piece from Chengjiang, more likely from the surrounding areas of the site. I'm pretty familiar with this fauna (have a lot of specimen, sometimes prepared by me) but when I saw this I was thrilled. The overall structure is no longer than 3cm along the curve, and I haven't touch it for any sort of preparation. Before I'll post it on my Instagram, I would to know better what it is. The shape and the "button"- like dots, circled in green
  2. Taxonomy according to Fossilworks.org. Quote from Zhang et al. 2003, p. 447:” The Chengjiang Lagerstätte yields several well-preserved Early Cambrian fossil assemblages (Zhang et al. 2001) from the Yu’anshan Member of the Qiongzhusi Formation in Yunnan Province, South China, consisting of a diverse suite of arthropods (Shu et al. 1995, 1999a; Hou and Bergström 1997; Zhang 1999; Zhang et al. 2000). One of them, small and relatively rare, was only briefly described based on a few specimens (Hou et al. 1991), and repeatedly considered to be a giant protaspis of a naraoiid by many authors (Fo
  3. This small fossil is from Chengjiang and was labelled as "Anomalocaris mouth" by seller. He's been wrong before and I'm rather skeptical about that interpretation. Any ideas, anyone?
  4. Leptomitus teretiusculus is a moderately common, thin-walled sponge species. Specimens range up to 11cm long and about 1,2cm wide. Literature: J. Y. Chen, X. G. Hou, and H. Z. Lu. 1989. Lower Cambrian leptomitids (Demospongea), Chengjiang, Yunnan. Acta Palaeontologica Sinica 28(1):17-30
  5. From http://sciencythoughts.blogspot.com/2015/05/yuganotheca-elegans-early-cambrian.html: "An Early Cambrian Lophophorate Animal with affinities to Brachiopods and Phoronids. Lophophorates are animals which feed using a filter called a lophophore, which comprises a number of setae covered tentacles, to extract food from water. The group includes the shelled Brachiopods, the worm-like Phoronids, the minute Entoprocts, and colonial Bryozoans, and has been shown by molecular and embryonic evidence to be related to the Molluscs and Annelids. Within the Lophophorates the Phoronids
  6. Micro-CT lets scientists see telling 3D details in arthropod evolution Juan Siliezar, Harvard University The open access paper is: Liu, Y., Ortega-Hernández, J., Chen, H. et al. Computed tomography sheds new light on the affinities of the enigmatic euarthropod Jianshania furcatus from the early Cambrian Chengjiang biota. BMC Evol Biol 20, 62 (2020). Yours, Paul H.
  7. Meet Cambroraster falcatus, the sediment-sifting ‘Roomba’ of the Cambrian This crustacean-like critter stalked the seas half a billion years ago. Katherine Wu, NOVA,, July 30, 2019 Moysiuk, J. and Caron, J.B., 2019. A new hurdiid from the Burgess Shale evinces the exploitation of Cambrian infaunal food sources. Proceedings of the Royal Society B, 286 (1908), p.20191079. Open access Proceedings of the Royal Society B PDF Brantford Lapidary and Mineral Society PDF Sun, Z., Zeng, H. and Zhao, F., Occurrence of the hurdiid radio
  8. I wanted to add a bit of cambrian fossils to my collection. So I did some research on ChengJiang biota protection and the fossil laws of China(As of updated to 2019,I am from Hong Kong so I can read the documents) According to the Chinese Chengjiang biota protection area,the maotianshan area is a protected site,but surrounding areas do not have such protection(Its like other parts of China),where such fossils can still be found in. Yet,according to the Chinese fossil law,fossils listed as special protection cannot be commericalized,and the fossils from ChengJiang fits the descrip
  9. Looking to trade for some Mazon creek fossils. Nothing too fancy, but I’d be happy to look at anything you have (besides Essexella). I have some soft bodied animals as well as trilobites from Chengjiang and other lower Cambrian formations in China, as well as a bunch of unprepped material (corals, brachiopods, trilobites) from Paulding, OH and Penn Dixie, NY. PM me if you’re interested and I can send some pictures. Thanks.
  10. connorp

    Pre/Cambrian Collection

    I have always been quite fascinated with the early stages of development of life on Earth. My interest really picked up when I first discovered the Ediacaran biota, and who can blame me. Those creatures are so enigmatic and fascinating. I was able to pick up a few specimens, but quickly realized that my desire for fossils greatly outweighed the supply and cost of Ediacaran fossils, and I soon discovered the equally fascinating and enigmatic Lower Cambrian Chengjiang biota. I was, and still am, blown away at the quality of preservation of these soft bodied critters. A lot of specimens come very
  11. oilshale

    Fuxianhuia protensa Hou 1987

    Fuxianhuia protensa life restoration created and copyrighted by Nobu Tamura, licensed under the Creative Commons Attribution-Share Alike 4.0 International (Wikimedia Commons) Lit.: Hou X.-G., 1987: Three new large arthropods from Lower Cambrian Chengjiang, eastern Yunnan. Acta Palaeontologica Sinica 26, 272–285. Bergström, J., Hou, X., Zhang, X., Liu, Y. & Clausen, S., 2008: A new view of the Cambrian arthropod Fuxianhuia. GFF, Vol. 130 (Pt. 4, December), pp. 189–201. Stockholm. ISSN 1103-5897.
  12. connorp

    Possible Chengjiang cnidarian?

    I acquired this enigmatic creature a while back and just rediscovered it in storage. It was found in the Heilinpu Fm, Kunming, Yunnan Province, China (Lower Cambrian, same age as the Chengjiang fauna). I have seen a few similar creatures offered from the same locality from a few sellers. It has been alternately labeled as either a cnidarian or ctenophoran. However, I've looked through a few dozen papers about cnidarians/ctenaphorans from Chengjiang and have found no similar specimens. Has anyone seen these before?
  13. I’m looking for a complete high quality Elrathia kingii still in matrix. If there are multiple on the same plate even better. I have a variety of fossils from the Chengjiang biota and several Devonian trilobites (Penn Dixie and Morocco) available for trade. PM if you’re interested! Thanks.
  14. I recently got a nice deal on this Leanchoilia illecebrosa specimen from the Chengjiang biota. It looked like a dorsally compressed specimen which rarely have appendages preserved, so I was just expecting to clean up all the tool marks. However, while cleaning it up, I realized that it is in fact laterally compressed, and actually quite well preserved at that! The legs are starting to come out, and part of me is hoping that other appendages might be preserved as well. All prep is done with a needle under a magnifying light. It's going slow sinc
  15. MarcusFossils

    Misszhouia longicaudata

    From the album: Finest Chengjiang

    A fantastic example of this iconic early arthropod. Though incomplete, many pairs of biramous limbs can be seen, as well as details of its joints. The colors have been enhanced.
  16. MarcusFossils

    Naraoia spinosa

    From the album: Finest Chengjiang

    A complete specimen of an iconic Chengjiang species. Details of limb imprints and digestive diverticula can be seen.
  17. MarcusFossils

    Leanchoilia sp?

    From the album: Finest Chengjiang

    I'm not certain of the species as all the tergites are not present, but whatever it is, it's amazing. The colors are slightly enhanced to reveal details of its limbs and antennae.
  18. MarcusFossils

    Yunnanocephalus yunnnanensis

    From the album: Finest Chengjiang

    A fine example of this early trilobite with one antennae fortuitously preserved.
  19. MarcusFossils

    Leanchoilia illecebrosa

    From the album: Finest Chengjiang

    This is the only Leanchoilia I've ever seen with an appendage preserved! Quite a rarity.
  20. MarcusFossils

    Fuxianhuia protensa

    From the album: Finest Chengjiang

    A wonder specimen with eyes preserved.
  21. MarcusFossils

    Eoredlichia intermedia

    From the album: Finest Chengjiang

    A fine rather 3D specimen of this iconic early trilobite, with both antennae preserved.
  22. MarcusFossils

    Kuanyangia pustulosa with Antennae

    Purchased unprepared, and prepared by me.
  23. connorp

    Unknown Chengjiang Microfossils

    I was splitting a piece of shale from one of the formations that holds the Chengjiang biota, and found quite a few of these small things. They're no more than 2 mm in length and to the naked eye, look like small red lines. The pictures below were taken at 4x magnification (first picture above is one specimen, latter three are another specimen). First thought was some segmented worm, but I'm not super convinced. Any ideas?
  24. oilshale

    Naraoia longicaudata Zhang and Hou 1985

    From the album: Invertebrates

    Naraoia longicaudata Zhang and Hou 1985 Early Cambrian Chengjiang Yunnan PRC
  25. Kurufossils

    Spot the Vetulicola?

    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?
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