Also known as Nakasato

Where: Gunma, Japan (36.1° N, 138.8° E: paleocoordinates 47.8° N, 140.3° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Sebayashi Formation (Sanchu Group), Late/Upper Barremian to Late/Upper Barremian (130.0 - 113.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; mudstone

Size class: mesofossils

Collected by R. Matsumoto in 1994

Collection methods: surface (float),

• found by Mr. Ryosuke Matsumoto of Numata-shi, Gunma

Primary reference: Y. Hasegawa, E. Buffetaut, M. Manabe and Y. Takakuwa. 2003. A possible spinosaurid tooth from the Sebayashi Formation (Lower Cretaceous), Gunma, Japan. Bulletin of the Gunma Museum of Natural History 7:1-5 [B. Beatty/B. Beatty]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 87522: authorized by Matthew Carrano, entered by Matthew Carrano on 18.03.2009

Creative Commons license: CC BY (attribution)