Iwaki (Loc.11) (Oligocene of Japan)

Where: Fukushima, Japan (37.0° N, 140.9° E: paleocoordinates 44.4° N, 137.3° E)

• coordinate based on political unit

When: Early/Lower Oligocene (33.9 - 28.4 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: Y. Yabumoto and T. Uyeno. 1994. Late Mesozoic and Cenozoic fish faunas of Japan. The Island Arc 3:255-269 [C. Jaramillo/C. Pimiento]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 161439: authorized by Carlos Jaramillo, entered by Catalina Pimiento on 05.09.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• Authors cite Suzuki 1991
Chondrichthyes
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Odontaspidida - Carcharodontidae
"Isurus hastalis" = Cosmopolitodus hastalis
"Isurus hastalis" = Cosmopolitodus hastalis Agassiz 1843 elasmobranch
 Lamniformes - Lamnidae
Isurus desori Sismonda 1849 mako shark
Lamna sp. Cuvier 1816 mackerel shark
 Lamniformes - Odontaspididae
Odontaspis sp. Agassiz 1843 sand tiger shark
 Carchariniformes - Carcharhinidae
Negaprion sp. Whitley 1940 lemon shark
Galeocerdo sp. Müller and Henle 1837 tiger shark
 Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816 bullhead shark
 Hexanchiformes - Hexanchidae
Hexanchus sp. Rafinesque 1810 sixgill shark