Also known as Ohyama, Ooyama-machi

Where: Toyama, Japan (36.5° N, 137.3° E: paleocoordinates 48.4° N, 137.7° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Atotsugawa Formation (Tetori Group), Aptian (125.5 - 112.0 Ma)

• also listed as Inotani Mbr of the Nagatogawa Fm (Itoshiro Gp); Atotsugawa is in the Akaiwa Subgroup; fission-track age for formation of 113 +/- 6 Ma

• bed-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; muddy sandstone

Size classes: macrofossils, mesofossils

Preservation: mold/impression, trace

Collected by T. Hamuro in 1995-2002

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: M. Matsukawa, T. Hamuro, T. Mizukami and S. Fujii. 1997. First trackway evidence of gregarious dinosaurs from the Lower Cretaceous Tetori Group of eastern Toyama prefecture, central Japan. Cretaceous Research 18:603-619 [M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60557: authorized by Matt Carrano, entered by Kaitlin Maguire on 17.05.2006, edited by Matt Carrano