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GEOREF RECORD

Taxonomy of Late Silurian to Middle Devonian radiolarians from the Kuzuryu Lake District of the Hida Gaien Belt, Fukui Prefecture, central Japan

Toshiyuki Kurihara and Katsuo Sashida
Taxonomy of Late Silurian to Middle Devonian radiolarians from the Kuzuryu Lake District of the Hida Gaien Belt, Fukui Prefecture, central Japan
Micropaleontology (2000) 46 (1): 51-71

Abstract

Moderately well-preserved late Late Silurian (Ludlowian to Pridolian) to early Middle Devonian (Eifelian) radiolarians were recovered from clastic rock sequences in the Kuzuryu Lake district of the Hida Gaien Belt, Fukui Prefecture, central Japan. These radiolarians are identical to the faunas of the following four assemblages: Zadrappolus yoshikiensis (Late Silurian; Ludlowian to Pridolian), Pseudospongoprunum sagittatum (latest Silurian; Pridolian), Zadrappolus sp. aff. Z. spinosus (latest Silurian to earliest Devonian; Pridolian to Lochkovian) and Pactarentinia holdsworthi (Early to Middle Devonian; Emsian to Eifelian) Assemblages. These radiolarian faunas from the Hida Gaien Belt are correlative with those of the Kurosegawa Belt (Outer Belt of southwest Japan). Silurian radiolarian faunas from the Hida Gaien and Kurosegawa Belts are similar to those from West Junggar in westernmost China. The Early and Middle Devonian radiolarian faunas in Japan are different from those in eastern Australia in that the Japanese faunas characteristically contain "shelled Palaeoscenidiidae". Thus, based on radiolarian faunal similarity, Silurian and Devonian radiolarian-bearing rock sequences in Japan are inferred to have accumulated in the sea nearer to the Sino-Korean Continent than to eastern Australia in the low latitude of Gondwana. Radiolarians of 26 species belonging to 13 genera were systematically investigated. Ten new species are described: Palaeoscenidium simplum, Palaeoscenidium hakogasensis, Palaeoscenidium fragilis, Deflantrica furutanii, Pactarentinia intermedia, Pactarentinia igoi, Tlecerina isensis, Ceratoikiscum izumiensis, Palaeopyramidium ramosum and Palaeoumbraculum hidense.


ISSN: 0026-2803
Coden: MCPLAI
Serial Title: Micropaleontology
Serial Volume: 46
Serial Issue: 1
Title: Taxonomy of Late Silurian to Middle Devonian radiolarians from the Kuzuryu Lake District of the Hida Gaien Belt, Fukui Prefecture, central Japan
Affiliation: University of Tsukuba, Doctoral Program in Geoscience, Ibaraki, Japan
Pages: 51-71
Published: 2000
Text Language: English
Publisher: American Museum of Natural History, New York, NY, United States
References: 78
Accession Number: 2001-050914
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 plates, 1 table, sketch maps
N35°19'60" - N36°15'00", E135°40'00" - E136°48'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200116
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