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Omichidani Formation

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Journal Article

The geological age and phytogeographical significance of some metamorphosed palynomorphs from the Omichidani Formation of Japan Available to Purchase

Douglas J. Nichols, Masaki Matsukawa, Makoto Ito
Journal: Palynology
Published: 01 December 2010
Palynology (2010) 34 (2): 157–163.
DOI: https://doi.org/10.1080/01916121003672941
...Douglas J. Nichols; Masaki Matsukawa; Makoto Ito Abstract Thermally altered and carbonised palynomorphs from the Omichidani Formation in the Tetori area of west-central Japan are poorly preserved but identifiable at the genus level. They include fern spores and gymnosperm pollen, and pollen...
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View PDF for article title, The geological age and phytogeographical significance of some metamorphosed palynomorphs from the <span class="search-highlight">Omichidani</span> <span class="search-highlight">Formation</span> of Japan
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(A) Geological map of the Omichidani Formation and the Tetori Group in the Hakusan region of the Tetori area. The inset area at upper right is slightly enlarged (in black) and then greatly enlarged to show details of the map area. (B) Pollen sample horizons with columnar sections in Akadanigawa gorge. Numbers of columns refer to the routes in fig. 3 of Matsukawa et al. (2006). (C) Map showing localities of samples for palynological analysis. The numbers 41 and 46 on columnar sections indicate Akadanigawa gorge and south of Tani pass, respectively. They correspond with the numbers on fig. 3 of Matsukawa et al. (2006).

(A) Geological map of the Omichidani Formation and the Tetori Group in the ... Available to Purchase

Published: 01 December 2010
Figure 1. (A) Geological map of the Omichidani Formation and the Tetori Group in the Hakusan region of the Tetori area. The inset area at upper right is slightly enlarged (in black) and then greatly enlarged to show details of the map area. (B) Pollen sample horizons with columnar sections
Image
Spores and pollen from the Omichidani Formation in the Tetori area of west-central Japan. Figures 1–7 are from locality TETO-8; Figures 8–27 are from localities TETO-6A and TETO-6C. See text for locality data. All specimens approximately × 700. Figure 1. Laevigatosporites sp. Figure 2. Cyathidites sp. Figure 3. Alisporites sp. Figure 4. Tschudypollis sp. Figure 5. Wodehouseia sp. Figure 6. Aquilapollenites sp. Figure 7. Aquilapollenites sp. cf. A. meliorTakahashi &amp; Shimono 1982. Figure 8. Laevigatosporites sp. Figure 9. Deltoidospora? sp. Figure 10. Unidentified monosulcate angiosperm pollen (Arecipites or Liliacidites). Figure 11. Podocarpidites sp. Figure 12. Tricolpites sp. Figures 13–14. Unidentified triporate angiosperm pollen. Figures 15–16. Aquilapollenites subtilis Mtchedlishvili 1961. Figure 17. Aquilapollenites sp. Figures 18– 19. Aquilapollenites attenuatus Funkhouser 1961. Figures 20a–b. Aquilapollenites quadrilobus Rouse 1957 (two levels of focus). Figures 21a–b. Aquilapollenites quadrilobus Rouse 1957 (two levels of focus). Figure 22. Aquilapollenites collaris (Tschudy &amp; Leopold 1971) Nichols 1994. Figures 23–27. Wodehouseia sp.

Spores and pollen from the Omichidani Formation in the Tetori area of west-... Available to Purchase

Published: 01 December 2010
Plate 1. Spores and pollen from the Omichidani Formation in the Tetori area of west-central Japan. Figures 1–7 are from locality TETO-8; Figures 8–27 are from localities TETO-6A and TETO-6C. See text for locality data. All specimens approximately × 700. Figure 1. Laevigatosporites sp. Figure 2
Journal Article

Fruits of Hemitrapa (Trapaceae) from the Miocene of Eastern China, Their Correlation with Sporotrapoidites erdtmanii Pollen and Paleobiogeographic Implications Available to Purchase

Qi Wang
Published: 01 January 2012
Journal of Paleontology (2012) 86 (1): 156–166.
DOI: https://doi.org/10.1666/11-061.1
...Qi Wang Abstract The fruits of the extinct genus Hemitrapa Miki (Trapaceae) are described from the Miocene Shanwang Formation, representing its first fossil record in the Cenozoic of China. Bearing a fusiform, relatively small fruit body with a very long stalk and four sub-equal, strongly ascending...
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View PDF for article title, Fruits of Hemitrapa (Trapaceae) from the Miocene of Eastern China, Their Correlation with Sporotrapoidites erdtmanii Pollen and Paleobiogeographic Implications
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Journal Article

Cyclonephelium brevireticulatum , a new dinoflagellate cyst from the Arkadelphia Formation (upper Maastrichtian), Hot Spring County, Arkansas, USA Available to Purchase

Natalie R. Dastas, John A. Chamberlain, Jr.
Journal: Palynology
Published: 11 December 2020
Palynology (2021) 45 (3): 487–505.
DOI: https://doi.org/10.1080/01916122.2020.1859414
... M , Ito M. 2010 . The geological age and phytogeographical significance of some metamorphosed palynomorphs from the Omichidani Formation of Japan . Palynology . 34 ( 2 ): 157 – 163 . Nøhr-Hansen H , Dam G. 1999 . Trithyrodinium evittii Drugg 1967 and T . fragile...
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View PDF for article title, Cyclonephelium brevireticulatum , a new dinoflagellate cyst from the Arkadelphia <span class="search-highlight">Formation</span> (upper Maastrichtian), Hot Spring County, Arkansas, USA
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Journal Article

Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: Implications for Eocene paleoclimate and Late Cretaceous paleogeography Available to Purchase

Serhiy D. Buryak, Alberto V. Reyes, Christopher K. West, Britta J.L. Jensen, S. Andrew DuFrane, Joshua H.F.L. Davies, Yan Luo, Jennifer M. Galloway, Peter A. Siver, John A. Westgate, Jesse R. Reimink, D. Graham Pearson, Alexander P. Wolfe
Journal: GSA Bulletin
Published: 01 March 2024
GSA Bulletin (2024) 136 (9-10): 3921–3938.
DOI: https://doi.org/10.1130/B37276.1
...://doi.org/10.1080/01916122.1982.9989238 . Nichols , D.J. , Matsukawa , M. , and Ito , M. , 2010 , The geological age and phytogeographical significance of some metamorphosed palynomorphs from the Omichidani Formation of Japan : Palynology , v. 34 , p. 157 – 163 , https://doi.org...
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View PDF for article title, Tephra zircon U-Pb geochronology of kimberlite maar sedimentary fills in subarctic Canada: Implications for Eocene paleoclimate and Late Cretaceous paleogeography
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