Kinshozan quarry, Parafusulina zone, Akasaka, Gifu Prefecture (Permian of Japan)

Where: Japan (35.4° N, 136.6° E: paleocoordinates 19.7° N, 107.3° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Akasaka Formation, Roadian (272.3 - 268.8 Ma)

• Uppermost part of lower division (zone of Parafusulina), contains fusulind Parafusulina japonica

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, massive, gray limestone

• Pale orange and dark gray part of the gray-white massive limestone

Size class: macrofossils

Primary reference: M. Goto, M. Okura, and H. Ogawa. 1988. On teeth and dermal teeth of chondrichthyes from the Akasaka Limestone (Middle Permian), central Japan. Earth Science (Chikyu Kagaku) 42(5):209-297 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90286: authorized by Matthew Clapham, entered by Matthew Clapham on 15.07.2009, edited by Priscilla Vazquez

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Petalodontiformes - Petalodontidae
"Neopetalodus" sp.1
"Neopetalodus" sp.1 Murata and Uyeno 1979 chimaera
 Cochliodontiformes - Cochliodontidae
Cochliodontidae indet., Sandalodus (Deltodus) sp.1
Cochliodontidae indet. Owen 1867 chimaera
Sandalodus (Deltodus) sp.1 Newberry and Worthen 1866 chimaera
 Symmoriiformes - Symmoriidae
Petrodus sp., ? Petrodus sp.
Petrodus sp. McCoy 1848 elasmobranch
? Petrodus sp. McCoy 1848 elasmobranch
 Ctenacanthiformes - Ctenacanthidae
Glikmanius occidentalis2
Glikmanius occidentalis2 Leidy 1859 elasmobranch
 Hybodontiformes - Acrodontidae
? Acrodus sp.1
? Acrodus sp.1 Agassiz 1834 elasmobranch
1Goto 1994; 2Yamagishi and Fujimoto 2011