Shiobara, Shiobara-machi, Tochigi Prefecture (KYFSI collection) (Pleistocene of Japan)

Where: Japan (37.0° N, 139.8° E: paleocoordinates 37.0° N, 139.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Miyajima Formation (Shiobara Group), Middle Pleistocene (0.8 - 0.1 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: crater lake; lithified mudstone

• Caldera-fill lake

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Keio Yochisha Science Museum (KYFSI)

Primary reference: M. Hayashi and H. Aiba. 2016. A fossil record of Malacopsephenoides japonicus (Coleoptera, Psephenidae) from the Middle Pleistocene Shiobara Group in Shiobara, Tochigi Prefecture, Japan. Elytra, New Series 6:301-302 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194482: authorized by Matthew Clapham, entered by Matthew Clapham on 20.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Hemiptera - Tingidae
Uhlerites sp.2
Uhlerites sp.2 Drake 1927 lace bug
KYSFI042
 Hymenoptera - Vespidae
Polistes sp.3
Polistes sp.3 Latreille 1802 wasp
KYFSI003 (Vespula sp. in Aiba, 2015)
 Hymenoptera - Formicidae
Camponotus sp.4
Camponotus sp.4 Mayr 1861 ant
KYFSI195, 139
 Coleoptera - Geotrupidae
Ceratophyus yatagaii n. sp.1
Ceratophyus yatagaii n. sp.1 Aiba and Král 2023 earth-boring dung beetle
KYFSI209
 Coleoptera - Psephenidae
Malacopsephenoides japonicus
Malacopsephenoides japonicus Matsuda 1935 water penny beetle
KYFSI011
1Aiba and Král 2023; 2Aiba et al. 2021; 3Takahashi and Aiba 2023; 4Takahashi and Aiba 2023