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Found 6 results

  1. Last weekend was almost surreal; I've always been looking to go hunting for ammonites at some point, but the opportunity finally arose while I visited Hokkaido, Japan last week. Ammonites from Hokkaido have always been captivating; they definitely represent some of the best the Asian continent has to offer, and are also known to produce the biggest in the continent. In the far north of Hokkaido, iridescent ammonites could be found, while in the central region, heteromorphs are more common. In very rare occasions across the island, titanic ammonites are lifted out of the streams. On the 13th of July, my first day in the Hokkaido Prefecture, I met up with a local friend in Sapporo to go hunting. He's had quite a few years of experience, and is very knowledgeable about the ammonites of Hokkaido. After a few hours of driving, we went off the road and into the Hokkaido wilderness to search for ammonites. Not long after our arrival at the creek, we started finding clues of ammonite-bearing rock.
  2. A classic in ammonite research

    Hey everyone The ammonite Nipponites mirabilis, from the Late Cretaceous of Hokkaido (Japan), is one of the most popular heteromorph (uncoiled) ammonite - especially because it's coiled in such a bizarre, unique way. It was originally described in 1904 by the Japanese paleontologist Hisakatsu Yabe. And since the paper is rather old, it was rather difficult to find... It took me several hours to find it, trawling through quite a few online archives. So, for all of you who'd like to see the original description of Nipponites, here it is Yabe(1904)_CretaceousCephalopodsHokkaidoPart2.pdf Hope you all enjoy it! -Christian
  3. Hokkaido ornithopod prepwork finished!

    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
  4. Few 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
  5. Amateur 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.
  6. 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.
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