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List of fossils in Akita prefecture
A list of fossils reported from Akita prefecture, Tohoku region, Honshu island, Japan.
Photographs of outcrops and fossils in Akita prefecture
- Miocene (23.03-5.33 Ma)
- Mammals
- Desmostylus sp., (Molars)
- Fishes (Scales)
- Sharks
- Carcharodon sp.
- Echinuses
- Astriclypeus manni ambigenus => Astriclypeus mannii ambigenus
- Echinolampas yoshiwarai
- Bivalvia
- Anadara (Anadara) makiyamai => Anadara makiyamai
- Anisocorbula ohiroi
- Cardilia cf. toyamaensis
- Chlamys ishidae
- Clinocardium shinjiense
- Chione tateiwai => Leukoma tateiwai
- Dosinia akaisiana
- Dosinia (Phacosoma) nomurai => Dosinia nomurai
- Glycymeris vestitoides
- Limopsis cf. osawanoensis
- Macoma aomoriensis
- Macoma cf. tokyoensis
- Mercenaria sp.
- Mercenaria yokoyamai
- Meretrix ninohensis
- Monia marcrochisma => Pododesmus macrochisma, Green falsejingle
- Nemocardium samarangae => Keenaea samarangae
- Nuculana cf. confusa => Saccella cf. confusa
- Nuculana magarikawaensis
- Ostrea gravitesta => Magallana gigas, Pacific oyster
- Ostrea rosacea => Dendostrea rosacea
- Saccella saikaiensis
- Siratoria siratoriensis
- Solen cf. krusensterni
- Thracia sp.
- Vasticardium ogurai
- Yoldia yamagatana
- Scaphopoda
- Dentalium sp.
- Dentalium yokoyamai => Fissidentalium yokoyamai
- Gastropoda
- Babylonia kozaiensis => Babylonia lutosa
- Batillaria cf. toshioi
- Calyptraea sp., Chinese hat snail
- Cypraea sp., Cowry
- Nassarius minoensis => Nassarius castus
- Vicaryella ishiiana => Potamides ishiiana
- Vicaryella notoensis => Potamides notoensis
- Flowering plants
- Alangium aequalifolium
- Alnus miojaponica
- Betula uzenensis
- Camellia protojaponica
- Carpinus subyedoensis => Carpinus heigunensis
- Carpolithes japonica
- Carya miocathayensis
- Castanea miomollissima
- Castanopsis miocuspidata
- Cinnamomum lanceolatum
- Cinnamomum miocenum
- Cladrastis sp., Yellowwood, (Leaves)
- Comptonia naumanni => Comptonia japonica, (Leaves)
- Cyclobalanopsis inouei => Quercus inouei
- Cyclobalanopsis nathorstii => Quercus nathorstii
- Cyclobalanopsis praegilva => Quercus praegilva
- Entada mioformosana, (Leaves)
- Ilex daijimaensis
- Ilex ohashii
- Liquidambar miosinica
- Machilus nathorsti, (Leaves)
- Machilus ugoana
- Parrotia fagifolia
- Pterocarya asymmetrosa
- Pterocarya ezoana, (Leaves)
- Quercus miovariabilis, (Leaves)
- Rhus miosuccedanea
- Salvinia formosana
- Ternstroemia maekawai
- Ulmus longifolia
- Ulmus subparvifolia
- Ulmus takayasui
- Zelkova ungeri
- Conifers
- Glyptostrobus europaeus
- Keteleeria ezoana
- Metasequoia occidentalis
- Picea kanoi
- Picea ugoana
- Pinus miocenica
- Pinus oishii, (Leaves)
- Pinus palaeopentaphylla
- Torreya yoshiokaensis
- Tsuga aburaensis
- Foraminifera
- Miogypsina kotoi
- Operculina complanata japonica
- Globigerinoides sicanus => Globigerinoides sicana
- Globorotalia peripheroacuta => Fohsella peripheroacuta
- Globorotalia pseudopachyderma
- Sponges
- Aphrocallistes sp.
- Makiyama chitanii
- Pliocene (5.33-2.58 Ma)
- Sharks
- Carcharodon carcharias, (Teeth)
- Starfishes
- Asteria sp.
- Bivalvia
- Acila nakazimai
- Chlamys cosibensis
- Chlamys jousseaumei => Veprichlamys jousseaumei
- Cuspidaria gouldiana septentrionalis => Cardiomya gouldiana
- Heteromacoma sp.
- Limopsis tokaiensis
- Nuculana pernula sadoensis => Nuculana pernula, Müller's nut clam
- Nuculana robai => Robaia robai
- Palliolum murayamai => Mizuhopecten kimurai murayamai
- Palliolum peckhami => Delectopecten peckhami
- Patinopecten yessoensis => Mizuhopecten yessoensis, Yesso scallop
- Portlandia thraciaeformis => Megayoldia thraciaeformis
- Thyasira tokunagai
- Yoldia sp.
- Scaphopoda
- Dentalium octangulatum, Octangonal tusk shell
- Dentalium yokoyamai Makiyama
- Gastropoda
- Antiplanes contraria => Antiplanes vinosa
- Fusitriton oregonensis, Oregon hairy triton
- Mangelia parva var. => Propebela parva
- Mitra kurakiensis
- Mohnia yanamii => Retifusus virens
- Mohnia yanamii tenuis => Retifusus virens tenuis
- Natica tugaruana => Cryptonatica tugaruana
- Puncturella fastigiata
- Rectiplanes sanctiioannis => Antiplanes sanctiioannis
- Turritella cf. saishuensis
- Sponges
- Makiyama chitanii
- Foraminifera
- Globigerina pachyderma
- Globorotalia ikebei
- Trace fossils
- Pipe rocks
- Pleistocene (2.58- 0.01Ma)
- Mammals
- Palaeoloxodon namadicus yabei => Palaeoloxodon naumanni, (Molars)
- Sinomegaceros? sp.
- Zalophus lobatus => Zalophus japonicus, Japanese sea lion
- Bivalvia
- Arca boucardi
- Astarte borealis, Northern astarte
- Calopodium (Kennerlia) => Pandora sp.
- Glycymeris (Veletuceta) albolineata => Glycymeris albolineata, White-lined bittersweet
- Corbicula japonica, Japanese basket clam
- Pseudogrammatodon dalli obliquata => Porterius dalli
- Saxidomus purpurata
- Gastropoda
- Buccinum schantaricum
- Drillia principalis => Inquisitor jeffreysii, Jeffrey's turrid
- Euspira pila ovata
- Fulgoraria (prevostiana => Fulgoraria megaspira prevostiana
- Plesioacirsa chitaniana => Acirsa martensi
- Searlesia coreanica
- Tritonalia adunca => Ocinebrellus falcatus, Oyster drill
- Trophonopsis candelabrum => Boreotrophon candelabrum
- Turritella (Haustator) andenensis => Neohaustator andenensis
- Turritella (Haustator) nipponica => Neohaustator fortilirata, Strong-ribbed turritella
- Foraminifera
- Angulogerina kokozuraensis => Trifarina kokozuraensis
- Bolivina robusta
- Bolivina seminuda
- Cassidulina japonica => Islandiella japonica
- Cassidulina kasiwazakiensis => Cassidulita kasiwazakiensis
- Cassidulina sublimbata
- Cassidulina yabei
- Cibicides lobatulus => Cibicidoides lobatulus
- Cibicides cf. refulgens
- Discopulvinulina bradyi => Rosalina bradyi
- Elphidium advenum
- Elphidium fax barbarense
- Elphidium cf. fabum => Nonion cf. fabum
- Elphidium hanzawai => Elphidium advenum
- Elphidium subgranulosum => Cribroelphidium poeyanum
- Epistominella pulchella
- Eponides karsteni
- Globigerina borealis => Neogloboquadrina pachyderma
- Globigerina bulloides
- Globigerina cf. diplostoma
- Globigerina cf. eggeri => Neogloboquadrina cf. dutertrei
- Globigerina inflata => Globorotalia inflata
- Globigerina pachyderma => Neogloboquadrina pachyderma
- Globigerina quinqueloba => Turborotalita quinqueloba
- Globigerinoides cyclostoma => Globigerina cyclostoma
- Globigerinoides triloba
- Globorotalia cf. menardii
- Hauerina fragilissima => Pseudohauerina fragilissima
- Lagena alticostata
- Massilina inaequalis => Quinqueloculina inaequalis
- Miliolinella circularis
- Nodobaculariella sp.
- Nonion manpukuziensis => Florilus manpukuziensis
- Planulina wuellerstorfi => Cibicidoides wuellerstorfi
- Polystomellina discorbinoides
- Pullenia apertura
- Pulleniatina obliquiloculata
- Pseudononion japonicum
- Pyrgo yabei
- Quinqueloculina parkeri
- Quinqueloculina polygona
- Quinqueloculina sawanensis
- Quinqueloculina seminulum => Quinqueloculina seminula
- Quinqueloculina vulgaris
- Rotalina nipponica => Ammonia nipponica
- Sigmoilina schlumbergeri => Sigmoilopsis schlumbergeri
- Sigmomorphina sawanensis => Sigmomorpha sawanensis
- Spiroloculina corrugata
- Spiroloculina hadai
- Spiroloculina manifesta
- Textularia gramen
- Triloculina tricarinata
- Triloculina trigonula
- Uvigerina akitaensis
- Uvigerina yabei
- Vertebralina striata