Wadanohana (Cretaceous of Japan)

Where: Japan (32.4° N, 130.4° E: paleocoordinates 41.5° N, 121.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hinoshima Formation (Hinenoura Group), Early/Lower Santonian (85.8 - 83.5 Ma)

• lower part of the Hinoshima Formation

Environment/lithology: marine; mudstone

• submarine debris flow
• black shale or black massive mudstone

Size classes: macrofossils, mesofossils

Primary reference: N. Kitamura. 2019. Features and paleoecological significance of the shark fauna from the Upper Cretaceous Hinoshima Formation, Himenoura Group, Southwest Japan . Paleontological Research 23(2):110-130 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 219958: authorized by Patricia Holroyd, entered by Patricia Holroyd on 27.04.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Nuculanida - Nuculanidae
Ezonuculana mactraeformis mactraeformis
unclassified
  -
Buscyconidae indet., Thayasira (Thayasira) himedoensis
Bivalvia
 Myalinida - Inoceramidae
Inoceramus sp.
Inoceramus sp. Sowerby 1814 clam
 Arcida - Parallelodontidae
Nanonavis sachalinensis
 Arcida - Glycymerididae
Glycymeris (Glycymeris) amakusensis
 Carditida - Astartidae
Eriphyla sp.
Eriphyla sp. Gabb 1864 clam
 Lucinida - Lucinidae
Myrtea (Myrtea) ezoensis
Myrtea (Myrtea) ezoensis Nagao 1957 clam
 Trigoniida - Trigoniidae
"Apiotrigonia minor" = Megatrigonia (Apiotrigonia)
"Apiotrigonia minor" = Megatrigonia (Apiotrigonia) clam
 Nuculida - Nuculidae
Acila (Truncacila) hokkaidoensis, Nucula (Nucula) amanoi
Acila (Truncacila) hokkaidoensis Nagao 1932 divaricate nutclam
Cephalopoda
 Ammonitida - Pachydiscidae
Eupachydiscus sp., Eupachydiscus haradai
Eupachydiscus sp. Spath 1922 ammonite
Eupachydiscus haradai Jimbo 1894 ammonite
 Ammonitida - Diplomoceratidae
Polyptychoceras sp.
Polyptychoceras sp. Yabe 1927 ammonite
Chondrichthyes
 Hybodontiformes - Ptychodontidae
Ptychodus mammillaris
Ptychodus mammillaris Agassiz 1835 elasmobranch
 Euselachii -
Hexanchiformes indet.
Hexanchiformes indet. de Buen 1926 elasmobranch
 Hexanchiformes - Hexanchidae
Notidanodon sp., Notidanodon dentatus, Hexanchus sp., Hexanchus microdon
Notidanodon sp. Cappetta 1975 cow shark
Notidanodon dentatus Woodward 1886 cow shark
Hexanchus sp. Rafinesque 1810 sixgill shark
Hexanchus microdon Agassiz 1835 sixgill shark
 Lamniformes - Alopiidae
Paranomotodon sp.
Paranomotodon sp. Herman 1975 thresher shark
 Lamniformes - Cardabiodontidae
Dwardius sp.
Dwardius sp. Siverson 1999 mackerel shark
 Lamniformes - Otodontidae
Cretalamna appendiculata
Cretalamna appendiculata Agassiz 1835 mackerel shark
 Lamniformes - Pseudoscapanorhynchidae
Protolamna sp.
Protolamna sp. Cappetta 1980 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax sp.
Squalicorax sp. Whitley 1939 crow shark
 Synechodontiformes - Orthacodontidae
Sphenodus sp.
Sphenodus sp. Agassiz 1843 elasmobranch
 Synechodontiformes - Palaeospinacidae
Synechodus sp.
Synechodus sp. Woodward 1888 elasmobranch
 Echinorhiniformes - Echinorhinidae
Echinorhinus wadanohanaensis n. sp.
Echinorhinus wadanohanaensis n. sp. Kitamura 2013 shark