Hikoshima, Jinnobaru Formation: Rupelian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Suliformes - Plotopteridae
1 specimen
Ohashi and Hasegawa 2020 1 specimen
see common names

Geography
Country:Japan State/province:Yamaguchi County:Shimonoseki
Coordinates: 34.0° North, 130.9° East (view map)
Paleocoordinates:36.5° North, 127.7° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Oligocene
Stage: Rupelian 10 m.y. bin: Cenozoic 4
Key time interval: Rupelian
Age range of interval: 33.9 - 27.3 m.y. ago
Stratigraphy
Formation:Jinnobaru
Stratigraphic resolution:formation
Stratigraphy comments: YM-G-100206 was found by KF on April 29, 2013 in situ from the Jinnobaru Formation, Ashiya Group (Rupelian, latest Early Oligocene, ca. 29 Ma) at Hikoshima, Shimonoseki-City, Yamaguchi Prefecture, Japan. Hikoshima Islands in the Kanmon strait, such as Ainoshima island and Umashima island, and the northern part of Kyushu area have yielded many plotopterid specimens, including the type specimens of C. hexeris, Copepteryx titan, and other reported specimens (Hasegawa et al., 1979; Olson & Hasegawa, 1996; Kameya, Fukata & Hasegawa, 2001; Kawano & Kawano, 2001; Okazaki, 2009). Those areas comprise Oligocene strata, and invertebrate and vertebrate fossils have been found there (Tomita & Ishibashi, 1990; Okamoto & Sakai, 1995; Tomita & Oji, 2010; Okazaki, 2012; Fukata et al., 2014).
Lithology and environment
Primary lithology:medium sandstone
Includes fossils?Y
Lithology description: YM-G-100206 was found in the medium-grained sandstone of the Jinnobaru Formation, Ashiya Group.
Environment:coastal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:197243
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2018-10-26 11:33:12 Last modified:2025-02-22 15:12:02
Access level:the public Released:2018-10-26 11:33:12
Creative Commons license:CC0
Reference information

Primary reference:
40126. T. Ando and K. Fukata. 2018. A well-preserved partial scapula from Japan and the reconstruction of the triosseal canal of plotopterids. PeerJ 6:ee5391 [M. Uhen/M. Shalap/M. Uhen]

Secondary references:

74699 T. Ohashi and Y. Hasegawa. 2020. New Species of Plotopteridae (Aves) from the Oligocene Ashiya Group of Northern Kyushu, Japan. Paleontological Research 24(4):285-297 [M. Uhen/M. Uhen]