Where: Japan (32.3° N, 130.4° E: paleocoordinates 45.0° N, 126.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hobashiraiwa Member (Eboshi Formation), Middle Albian to Middle Albian (109.0 - 99.6 Ma)

• The basement granitic rocks overlain by the Eboshi Formation are dated as 103–108 Ma (early Albian: Nagakawa et al., 1997). The Eboshi Formation underlies the Hokahira Member, which contains the late Albian ammonoid, Mortoniceras (s. s.) aff. rostratum (Matsumoto and Tashiro, 1975). Probably the Eboshi Formation is middle to late Albian in age.

• bed-level stratigraphic resolution

Environment/lithology: estuary or bay; lithified siliciclastic sediments

Size class: macrofossils

Collection methods: Repository: National Museum of Nature and Science (Palaeontology Department), Tsukuba (NMNS-PA)

Primary reference: M. H. Dick, T. Komatsu, R. Takashima and A. N. Ostrovsky. 2014. A mid-Cretaceous (Albian-Cenomanian) shell-rubble bryozoan fauna from the Goshoura Group, Kyushu, Japan. Journal of Systematic Palaeontology 12:401-425 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138327: authorized by Matthew Clapham, entered by Matthew Clapham on 14.01.2013

Creative Commons license: CC BY (attribution)