Shiobara, Shiobara-machi, Tochigi Prefecture (SFMA 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: Konoha Fossil Museum (SFMA)

Primary reference: M. Hayashi, H. Aiba, E. Nakano, Y. Takahashi, and T. Sato. 2020. Fossilized water pennies (Coleoptera: Psephenidae) in the Middle Pleistocene lake deposits in Shiobara site, Tochigi Prefecture, Japan. Japanese Journal of Systematic Entomology 26:84-86 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 211426: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Odonata - Gomphidae
Sieboldius albardae1
Sieboldius albardae1 Selys-Longchamps 1886 clubtail dragonfly
SFMA0391, 0392, 0393, 0395, 0396, 0397, 0398, 0399, 0702, 0702
 Coleoptera - Psephenidae
Ectopria opaca, Psepheninae indet.
Ectopria opaca Kiesenwetter 1874 water penny beetle
SFMA0380, 0696
Psepheninae indet. Lacordaire 1854 water penny beetle
SFMA0381
 Hymenoptera - Formicidae
Camponotus sp.2, Lasius sp.2
Camponotus sp.2 Mayr 1861 ant
SFMA0652
Lasius sp.2 Fabricius 1805 ant
SFMA0096, 0651, 0383
1Sato et al. 2022; 2Takahashi and Aiba 2023