Annakka (Miocene of Japan)

Also known as Annaka

Where: Gunma, Japan (36.3° N, 138.9° E: paleocoordinates 37.9° N, 137.1° E)

• coordinate estimated from map

When: Haraichi Formation (Tomioka Group), Tortonian (11.6 - 7.2 Ma)

• Hasegawa and Kimura (2008) place this at about 11.29 Ma based on ash dates.

•Kimura et al. (20006) state that this locality is approximately 11.5 Ma, which makes it late Serravalian.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: T. Kimura and Y. Hasegawa. 2004. An outline of the Miocene cetotheres of Japan. Bulletin of the Gunma Museum of Natural History 8:79-88 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 56950: authorized by Mark Uhen, entered by Mark Uhen on 29.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Anseriformes - Anatidae
 Sirenia - Dugongidae
Dugongidae indet.4 Gray 1821 dugong
Shimoakima specimen
 Perissodactyla - Paleoparadoxiidae
Paleoparadoxia sp.1 Reinhart 1959 desmostylian
Nakajima specimen
 Carnivora - Desmatophocidae
"cf. Allodesmus megallos" = Allodesmus sinanoensis2
"cf. Allodesmus megallos" = Allodesmus sinanoensis2 Nagao 1941 pinniped
 Mysticeti - Balaenopteridae
Balaenopteridae indet.7 Gray 1864 rorqual
more likely Balaenopteridae indet. (M. D. Uhen)
 Mysticeti - Cetotheriidae
Cetotheriidae indet. Brandt 1872 whale
 Odontoceti -
cf. Scaldicetus sp.3 Du Bus 1867 toothed whale
 Delphinoidea - Delphinidae
Delphinidae indet.6 Gray 1821 dolphin