TY - JOUR
T1 - Upper Guadalupian to Lower Lopingian Latentifistularian (Radiolaria) Interval Zones of the Mino Belt in the Mt. Funabuseyama Area, Central Japan
AU - Kuwahara, Kiyoko
AU - Sano, Hiroyoshi
N1 - Funding Information:
granting his special permission for our fieldwork, and M. Murai (Motosu City), the manager of the Iwaidani gully logging road, who offered us facilities for fieldwork. Our sincere thanks go to Paula Noble (University of Nevada, Reno) for her linguistic and scientific reviews on the early version of the manuscript. A suggestion by A. aT kura (Hyogo University of Teacher Education) and an anonymous reviewer of the journal much improved the manu- script. Part of our research was financially supported by Grants-in-Aid for Scientific Research of the Japan Society for the Promotion of Science (Project/Area Numbers JP23540552 and JP16K13899 to the first author and JP24540499 to the second author).
Publisher Copyright:
© by the Palaeontological Society of Japan.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - We present a biostratigraphic study of the Latentifistularia (Radiolaria) in the upper Guadalupian to lower Lopingian (upper Capitanian to lower Wuchiapingian; Permian) succession of bedded chert of the Mino Belt in the Mt. Funabuseyama area, central Japan. The rocks examined are interpreted to be of the pelagic facies on the deep-marine lower flank of a mid-Panthalassic seamount. We established six latentifistularian-based interval zones in the chert succession (ca. 12.5 m in thickness) by using the first appearance datum of the latentifistularian species. They are the Foremanhelena triangula, Ruzhencevispongus sp. B, Ruzhencevispongus sp. C, Triplanospongos angustus, Cauletella paradoxa, and Triplanospongos musashiensis interval zones in ascending order. The first interval zone is underlain by an unnamed zone characterized by Follicucullus charveti and Follicucullus spp. with minor F. bipartitus and Pseudoalbaillella sp. On the basis of the radiolarian assemblage, we correlate the Foremanhelena triangula, Ruzhencevispongus sp. B, Ruzhencevispongus sp. C, Triplanospongos angustus interval zones and the Cauletella paradoxa and Triplanospongos musashiensis interval zones with the Follicucullus charveti-Albaillella yamakitai and Neoalbaillella ornithoformis assemblage zones in Japan, respectively. The lower three interval zones and the upper two interval zones are compared with the upper Capitanian and lower Wuchiapingian, respectively. The Triplanospongos angustus Interval Zone presumably includes the Guadalupian-Lopingian boundary. Our results show that the latentifistularians can be used to formulate a biostratigraphic zonation of the upper Capitanian to lower Wuchiapingian stages, in which the albaillellarians are much less abundant and diverse. The newly proposed interval zones permit the further subdivision of upper Capitanian to lower Wuchiapingian successions.
AB - We present a biostratigraphic study of the Latentifistularia (Radiolaria) in the upper Guadalupian to lower Lopingian (upper Capitanian to lower Wuchiapingian; Permian) succession of bedded chert of the Mino Belt in the Mt. Funabuseyama area, central Japan. The rocks examined are interpreted to be of the pelagic facies on the deep-marine lower flank of a mid-Panthalassic seamount. We established six latentifistularian-based interval zones in the chert succession (ca. 12.5 m in thickness) by using the first appearance datum of the latentifistularian species. They are the Foremanhelena triangula, Ruzhencevispongus sp. B, Ruzhencevispongus sp. C, Triplanospongos angustus, Cauletella paradoxa, and Triplanospongos musashiensis interval zones in ascending order. The first interval zone is underlain by an unnamed zone characterized by Follicucullus charveti and Follicucullus spp. with minor F. bipartitus and Pseudoalbaillella sp. On the basis of the radiolarian assemblage, we correlate the Foremanhelena triangula, Ruzhencevispongus sp. B, Ruzhencevispongus sp. C, Triplanospongos angustus interval zones and the Cauletella paradoxa and Triplanospongos musashiensis interval zones with the Follicucullus charveti-Albaillella yamakitai and Neoalbaillella ornithoformis assemblage zones in Japan, respectively. The lower three interval zones and the upper two interval zones are compared with the upper Capitanian and lower Wuchiapingian, respectively. The Triplanospongos angustus Interval Zone presumably includes the Guadalupian-Lopingian boundary. Our results show that the latentifistularians can be used to formulate a biostratigraphic zonation of the upper Capitanian to lower Wuchiapingian stages, in which the albaillellarians are much less abundant and diverse. The newly proposed interval zones permit the further subdivision of upper Capitanian to lower Wuchiapingian successions.
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U2 - 10.2517/2017PR004
DO - 10.2517/2017PR004
M3 - Article
AN - SCOPUS:85032175838
SN - 1342-8144
VL - 21
SP - 422
EP - 440
JO - Paleontological Research
JF - Paleontological Research
IS - 4
ER -
