Where: Hokuriku, Japan (37.2° N, 136.7° E: paleocoordinates 39.8° N, 134.1° E)
• coordinate stated in text
When: CN4-CN5a nannofossil zone, Sekinobana Formation, Middle Miocene (16.0 - 11.6 Ma)
• CN4 to CN5a of Calcareous Nannoplankton Zone by Okada and Bukry (Kami et a!. , 1981) .
• formation-level stratigraphic resolution
Environment/lithology: conglomeratic sandstone
Size class: macrofossils
Collection methods: The described specimens are reposited at the Department of Earth Sciences, Faculty of Science, Kanazawa University.
Primary reference: H. Karasawa. 1989. Late Cenozoic Elasmobranchs from the Hokuriku district, central Japan. The Science reports of the Kanazawa University 34(1):1-57 [C. Jaramillo/C. Pimiento]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 161492: authorized by Carlos Jaramillo, entered by Catalina Pimiento on 06.09.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Globothalamea | |
Cibicides sp. Monfort 1808 | |
Foraminifera | |
Globigerina sp. d'Orbigny 1826 | |
Bivalvia | |
Chlamys sp. Röding 1798 scallop
Gloripallium crassivenium Yokoyama 1929 scallop | |
Ostrea sp. Linnaeus 1758 oyster | |
"Lucinoma acutilineatum" = Lucinoma acutilineata
"Lucinoma acutilineatum" = Lucinoma acutilineata Conrad 1849 clam | |
Scaphopoda | |
Fissidentalium yokoyamai tusk shell | |
Echinoidea | |
Linthia sp. Desor 1853 heart urchin | |
Chondrichthyes | |
Rhinoptera sp. Cuvier 1829 cownose ray | |
Squatina sp. Dumeril 1806 angel shark | |
Dalatias licha Bonnaterre 1788 shark | |
Hexanchus gigas Sismonda 1857 sixgill shark | |
Pristiophorus sp. Bleeker 1859 saw shark | |
Carcharhinus acanthodon requiem shark
Carcharhinus priscus Agassiz 1843 requiem shark
Carcharhinus egertoni Agassiz 1843 requiem shark | |
Hemipristis serra Agassiz 1835 ground shark | |
Galeocerdo aduncus Agassiz 1835 tiger shark | |
Odontaspis volax sand tiger shark | |
"Eugomphodus acutissima" = Carcharias, "Eugomphodus cuspidatus" = Carcharias
"Eugomphodus acutissima" = Carcharias sand shark
"Eugomphodus cuspidatus" = Carcharias sand shark | |
Isurus planus Agassiz 1856 mackerel shark
Isurus desori Sismonda 1849 mackerel shark
"Isurus hastalis" = Carcharodon hastalis Agassiz 1838 white shark | |
Alopias superciliosus Lowe 1840 thresher shark | |
"Carcharocles megalodon" = Otodus megalodon
"Carcharocles megalodon" = Otodus megalodon Agassiz 1835 megalodon Two fragmental teeth specimens (KUE1677, 1642)
| |
Mammalia | |
Paleoparadoxia sp. Reinhart 1959 desmostylian |