Also known as Lake Hakasui

Where: Gifu, Japan (36.1° N, 136.8° E: paleocoordinates 46.9° N, 138.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Okurodani Formation (Tetori Group), Late/Upper Hauterivian to Late/Upper Hauterivian (136.4 - 113.0 Ma)

• originally assigned to upper part of Kagidani formation, later assigned to Kuwajima and Amagodani formations, then Okurodani Fm.

•The age of the Okurodani Formation is controversial, Kusuhashi et al. (2006) suggested a Barremian-Aptian age according to tuffaceous mudstone zircons, Nagata et al. (2019) suggested an age of 129.2 ± 0.4 (95% CI) Ma, and Sano and Yabe (2017) proposed an age of Late Hauterivian or younger.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; fine-grained, brown sandstone and mudstone

Size class: macrofossils

Preservation: mold/impression, trace

Collected in 1989

Collection methods: surface (in situ),

• Discovered by the Gifu Prefectural Museum.

Primary reference: M. Kunimitsu, K. Shikano, M. Sugiyama and H. Hasegawa. 1990. [Discovery of dinosaur footprints from the Tetori Group in Gifu Prefecture]. Abstracts of the 1990 Annual Meeting of the Palaeontological Society of Japan, Tokyo 101 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 97551: authorized by Matthew Carrano, entered by Matthew Carrano on 06.08.2010

Creative Commons license: CC BY (attribution)