Also known as Shokawa Village locality 2 (KO-2)
Where: Gifu, Japan (36.1° N, 136.9° E)
• Paleocoordinates: 45.1° N, 145.1° E (Wright 2013)
• coordinate stated in text
• small collection-level geographic resolution
When: Okurodani Formation (Tetori Group), Late/Upper Hauterivian to Late/Upper Hauterivian (136.4 - 113.0 Ma)
• Itoshiro Subgroup, lowest part of formation; Three levels with fossils within layer: lowemost plant macrofossils, then assorted bones and fish; then dinosaur teeth at top - total thickness 200 mm maximum.
•'KO2 bone-bed horizon'
•The fossiliferous horizon has been provisionally dated in relation to volcaninc tuff layers above the bone bed, for which dates of 120-140 Ma were obtained by fission track dating (Gifu-Ken Dinosaur Research Committee 1993).
•
•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.
• bed-level stratigraphic resolution
Environment/lithology: fine channel fill; fine-grained, gray, silty sandstone and mudstone
Size classes: macrofossils, mesofossils
Collected by Shibata, Ohkura, & Shimizu in 1990–1994
Collection methods: surface (float), surface (in situ),
• Repositories: Visitor's Centre of the Board of Education, Shokawa village (SBEG VP); Visitor's Centre of the Izumi Board of Education, Izumi, Fukui Prefecture, Japan (IBEF VP). Collected by Mr Ikoi Shibata, Mr Ohkura, Mr Shimizu
Primary reference: Y. Hasegawa, M. Manabe, S. Isaji, M. Ohkura, I. Shibata and I. Yamaguchi. 1995. Terminally resorbed iguanodontid teeth from the Neocomian Tetori Group, Ishikawa and Gifu Prefecture, Japan. Bulletin of the National Science Museum, Tokyo, Series C 21(1, 2):35-49 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 50310: authorized by Matthew Carrano, entered by Matthew Carrano on 12.05.2005, edited by Roger Benson
Creative Commons license: CC0 (CC0)
Taxonomic list
unclassified | |
Gnathostomata | |
| |
Osteichthyes | |
| |
Amphibia | |
| |
| |
Reptilia | |
| |
| |
| |
| |
"Crocodilia indet." = Crocodylia4
| |
| |
| |
| |
| |
Iguanodontidae indet. Bonaparte 1850 iguanodontid | |
| |
| |
Shokawa ikoi n. gen. n. sp.2 Evans and Manabe 1999 choristodere IBEF VP 3 (holotype postcranium), IBEF VP 8 (right dentary), 9 (left dentary), 10 (right distal humerus, forearm and part of hand), 11 (right radius), 12 (articulated caudal vertebrae), 13 (fragemntary hindlimb), 14 (a caudal vertebra), 15 (associated caudal vertebrae), 16 (hind limb), 200 (dorsal vertebra)
Monjurosuchus sp.5 Endo 1940 choristodere SBEG 045 (association of right squamosal, jugal, quadratojugal, and quadrate)
| |
Squamata "indet. A"3, Squamata "indet. B"3, ? Anguimorpha indet.4, Sakurasaurus shokawensis n. gen. n. sp.3, Scincomorpha indet.4
Sakurasaurus shokawensis n. gen. n. sp.3 Evans and Manabe 1999 squamates IBEF VP 17, SBEG VP 001, SBEG VP 003, IBEF VP 18-20, 25,
| |
Bivalvia | |
| |
Gastropoda | |
| |
Insecta | |
| |
Mesochara sp.6 Grambast 1962 | |
Cycadopsida | |
"Nilssonia kutai" = Nilsonia4
| |
Polypodiopsida | |
Cladophlebis sp.4 Brongniart 1849 | |
|