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A new species of early-diverging Sauropodiformes from the Lower Jurassic Fengjiahe Formation of Yunnan Province of China. This is an excellent paper to keep as a reference source for sauropod bobes of the lower Jurassic. Irisosaurus yimenensis. https://www.nature.com/articles/s41598-020-67754-4#disqus_thread
A NEW SPECIMEN OF THE TRIASSIC PISTOSAUROID YUNGUISAURUS, WITH IMPLICATIONS FOR THE ORIGIN OF PLESIOSAURIA (REPTILIA, SAUROPTERYGIA) by TAMAKI SATO, LI-JUN ZHAO, XIAO-CHUN WU and CHUN LI [Palaeontology, Vol. 57, Part 1, 2014, pp. 55–76] satochunlipalassauropyunguistriasspistosaurpala.12048.pdf " Revised diagnosis. Differing from known pistosauroids in the combination of the following characters: single interpterygoid vacuity with a narrow anterior extension, anterior extension of parasphenoid, at least six premaxillary teeth,elongate snout with slender teeth, pineal foramen reachingfrontal/parietal suture, nasal present, longitudinal ridge on temporal bar, sharp parietal crest, lack of squamosal bulbat posterior end of skull table, long mandibular symphysis,prominent coronoid process, constriction of snout and mandible (in adult individuals), about 50 cervical vertebrae with short neural arch and accessory articulation (zygosphene/zygantrum), rod-shaped chevrons not united medially, sickle-shaped clavicle, small scapula withoutventral plate, dorsal process of scapula slightly widen,absence of interglenoidal thickening of coracoids, semicircular pubis, long shaft of ilium, slender humerus and epipodials, hourglass-shaped ulna, at least 11 carpals and 8 tarsals (in adult individuals), hyperphalangy in manus"
Oxytropidoceras posted a topic in Fossil NewsNaked 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.