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Preparation of 'Mukawaryu', a nearly complete ornithopod skeleton, has been completed! The specimen is originated from the marine Yezo Group of Hokkaido (Japanese island), a location/rock unit famed for numerous heteromorph (uncoiled) ammonites. http://www.geologypage.com/2018/09/japans-largest-complete-dinosaur-skeleton-comes-to-life.html Now research of this fascinating dinosaur specimen can finally begin! -Christian
David in Japan posted a topic in AsiaFew month ago, an ammonite hunter from Hokkaido came to Mifune Dinosaur Museum in kumamoto prefecture to exhibit part of his collection. I had the occasion to take picture of his collection and as I promised on an other thread to put some picture of it, I created this post. I hope you will enjoy the pictures. From left to right: Jimboiceras sp., big Sharpeiceras frag, Anagaudryceras sp., Anapachydiscus sp., Mesopuzonia sp., Eupachydiscus sp. From left to right: Eupachydiscus sp., Desmoceras sp., Damesites sp., Hauericeras sp., Kitchinites sp., Metaplacenticeras sp., Anagaudryceras sp., Baculites + Yubariceras sp., Menuites sp., Neophiloceras sp., Mesopuzosia sp., Tetragonites sp. From left to right: Menuites sp., yubariceras sp., urchin, Araucariaceae leaf, ammonite indet. fragment, Gaudryceras sp., fossil wood with shipworms, Ammonite's trace fossil, Polyptychoceras sp. Gaudryceras sp. Damesites sp
Oxytropidoceras posted a topic in Fossil NewsAmateur collectors in Japan discover country's first and oldest fossil diving bird, Perot Museum of Nature and Science, August 8, 2017 http://www.perotmuseum.org/about-the-perot/newsroom/news-releases/2017/08/chupkaornis-keraorum.html https://www.sciencedaily.com/releases/2017/08/170808145449.htm "Two brothers from a small town in Hokkaido, Japan, made the discovery of their lives -- the first and oldest fossil bird ever identified in their country. Identified as a new species, it has been named Chupkaornis keraorum." The paper is: Tanaka, T., Y. Kobayashi, K. Kurihara, A. R. Fiorillo, and M. Kano. 2017. The oldest Asian hesperornithiform from the Upper Cretaceous of Japan, and the phylogenetic reassessment of Hesperornithiformes. Journal of Systematic Palaeontology, 2017; 1 DOI: 10.1080/14772019.2017.1341960 http://www.perotmuseum.org/media/files/Newsroom/2017/8.8.2017_Tanaka_et_al_2017_Chupkaornis.pdf Yours, Paul H.
Japan’s Most Complete Dinosaur Discovery Late Cretaceous Hadrosaur “Japan’s Greatest Dinosaur Fossil Find” Everything Dinosaur http://blog.everythingdinosaur.co.uk/blog/_archives/2017/04/29/japans-most-complete-dinosaur-discovery.html Largest-Ever Complete Dinosaur Fossils Found in Japan, NBC Bay Area - April 28, 2017 http://www.nbcbayarea.com/on-air/as-seen-on/Largest-Ever-Complete-Dinosaur-Fossils-Found-in-Japan_Bay-Area-420764013.html Japan's largest complete dinosaur fossil confirmed Emirates 24|7 - April 29, 2017 http://www.emirates247.com/news/emirates/japan-s-largest-complete-dinosaur-fossil-confirmed-2017-04-29-1.652106 Related papers: Ando, H. and Tomosugi, T., 2005. Unconformity between the Upper Maastrichtian and Upper Paleocene in the Hakobuchi Formation, north Hokkaido, Japan: a major time gap within the Yezo forearc basin sediments. Cretaceous Research, 26(1), pp. 85-95. https://www.researchgate.net/profile/Hisao_Ando/publication/248573248_Unconformity_between_the_Upper_Maastrichtian_and_Upper_Paleocene_in_the_Hakobuchi_Formation_north_Hokkaido_Japan_A_major_time_gap_within_the_Yezo_forearc_basin_sediments/links/53e5e2030cf2fb7487183f01.pdf Takashima, R., Kawabe, F., Nishi, H., Moriya, K., Wani, R. and Ando, H., 2004. Geology and stratigraphy of forearc basin sediments in Hokkaido, Japan: Cretaceous environmental events on the north-west Pacific margin. Cretaceous Research, 25(3), pp. 365-390. http://s3.amazonaws.com/academia.edu.documents/44520225/Geology_and_stratigraphy_of_forearc_basi20160407-7020-1ugejad.pdf?AWSAccessKeyId=AKIAIWOWYYGZ2Y53UL3A&Expires=1493590512&Signature=VXzJJfF8NzeWZkRVUj4wCxw%2Bzzs%3D&response-content-disposition=inline%3B filename%3DGeology_and_stratigraphy_of_forearc_basi.pdf Ando, H., Tamura, Y. and Takamatsu, D., 2010. Fourth‐to third‐order cycles in the Hakobuchi Formation: Shallow‐ marine Campanian final deposition of the Yezo Group, Nakagawa area, northern Hokkaido, Japan. Island Arc, 19(4), pp. 567-589. https://www.researchgate.net/profile/Hisao_Ando/publication/249479359_Fourth-_to_third-order_cycles_in_the_Hakobuchi_Formation_Shallow-marine_Campanian_final_deposition_of_the_Yezo_Group_Nakagawa_area_northern_Hokkaido_Japan/links/0c9605305cf8ceb45e000000/Fourth-to-third-order-cycles-in-the-Hakobuchi-Formation-Shallow-marine-Campanian-final-deposition-of-the-Yezo-Group-Nakagawa-area-northern-Hokkaido-Japan.pdf Yours, Paul H.