Olenekian (Early Triassic) stratigraphy and fossil assemblages in northeastern Vietnam / ed. by Y.Shigeta. - Tokyo: Nat. museum of nature a. science, 2014. - viii, 309 p.: ill. - (National museum of nature and science monographs; N 45). - Bibliogr.: p.295-309. - Пер. загл.: Оленекская (раннетриасовая) стратиграфия и ископаемые парагенезисы на северо-востоке Вьетнама. - ISBN 978-4-87803-038-3; ISSN 1881-9109  Место хранения:   02 | Отделение ГПНТБ СО РАН | Новосибирск

Оглавление / Contents

Contributors ................................................... vi Abstract ...................................................... vii Introduction Y. Shigeta, T. Komatsu, H.T. Dang, T. Maekawa, O. Takahashi, G. Tanaka and Y. Tsutsumi ...................... 1 Paleogeographical and geological setting T. Komatsu, Y. Shigeta and H.T. Dang ......................... 4 Stratigraphy of the Вас Thuy Formation T. Komatsu, T. Maekawa and Y. Shigeta ........................ 6 Depositional environments of the Вас Thuy Formation T. Komatsu, T. Maekawa, Y. Shigeta, H.T. Dang and P.D. Nguyen ................................................ 35 Biostratigraphy Ammonoid succession Y. Shigeta .................................................. 47 Conodont succession T. Maekawa and T. Komatsu ................................... 51 Correlation (Y. Shigeta and T. Maekawa ...................... 54 Age of rhyolite from the Khon Lang Formation Y. Tsutsumi and T. Komatsu .................................. 54 Discussion Aspects of Smithian ammonoid fauna Y. Shigeta .................................................. 57 Internal features in the early whorls of ammonoids Y. Shigeta and T. Maekawa ................................... 60 Ammonoid mode of occurrence (Y. Shigeta and T. Komatsu ...... 62 Smithian gastropod assemblages of the Вас Thuy Formation A. Kaim, A. Niitzel and T. Maekawa .......................... 63 Bivalve assemblages and mode of occurrence T. Komatsu, H.T. Dang and Т.C. Dinh ......................... 64 Brief note on the radiolarian faunas of the Upper Smithian (Lower Triassic) O. Takahashi ................................ 65 Systematic Paleontology Cephalopods Y. Shigeta and H. D. Nguyen ................................. 65 Gastropods A. Kaim, A. Niitzel and T. Maekawa ......................... 167 Bivalves T. Komatsu, H.T. Dang and Т.C. Dinh ........................ 184 Conodonts T. Maekawa and H. Igo ...................................... 190 Ostracods G. Tanaka, T. Komatsu and T. Maekawa ....................... 271 Radiolarians O. Takahashi and Y. Miyake ................................. 278 Concluding remarks Y. Shigeta, T. Komatsu, T. Maekawa and H.T. Dang ........... 294 Acknowledgements .............................................. 295 References .................................................... 295