Where: Fukushima, Japan (42.8° N, 143.0° E: paleocoordinates 42.9° N, 142.6° E)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: N21 foram zone, Futatsu-numa Sand Member (Tomioka Formation), Late/Upper Pliocene (3.6 - 2.6 Ma)
• LITHOSTRATIGRAPHY: From Futatsu-numa Sand (informal) member of the Tomioka Formation, Taga Group. STRATIGRAPHIC RELATIONS: From basal sand (30 m) of 100 m thick Tomioka Formation THICKNESS: 30 m thick. AGE: Molluscan biostratigraphy suggests a Pliocene age. Micropaleontological data indicates the Futatsu-numa Sand is included in the Globoratalia tosaensis Zone (N21) of the planktonic foraminiferal zonation and is contained in the Denticulopsis seminae var. fossils-Denticulopsis kamtschatica diatom Zone, and its age is estimated to fall between 2.5 and 3.5 Ma.
• member-level stratigraphic resolution
Environment/lithology: shoreface; unlithified, medium-grained, coarse sandstone
Size class: macrofossils
Preservation: original aragonite, original calcite
Collection methods: bulk, quarrying,
• COLLECTOR: Presumably the authors, S. O'Hara and N. Nemoto, supplemented by collections from Y. Makino (Ibaraki University). REPOSITORY: CU (Geological Institute, Chiba University)
Primary reference: S. O'Hara and N. Nemoto. 1988. Pectinids from the Taga Group of the Joban Coalfield. Saito Ho-on Kai Special Publication 1:481-496 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 62295: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Gastropoda | |
Acmaea pallida, "Collisella cassis" = Lottia
Acmaea pallida limpet
"Collisella cassis" = Lottia limpet | |
"Pomaulax japonicus" = Astraea (Pomaulax), Homalopoma aumussitatum
"Pomaulax japonicus" = Astraea (Pomaulax) snail
Homalopoma aumussitatum snail | |
Umbonium giganteum, "Omphalius rusticus" = Chlorostoma (Omphalius)
| |
Diodora quadriradiata Reeve 1850 snail
Puncturella fastigiata puncturella
Puncturella nobilis puncturella | |
| |
Ariadnaria insignis snail | |
Inquisitor cosibensis, "Antiplanes sadoensis" = Antiplanes, "Rectiplanes motojimai" = Antiplanes, "Rectiplanes sanctiioannis" = Antiplanes
Inquisitor cosibensis snail
"Antiplanes sadoensis" = Antiplanes snail
"Rectiplanes motojimai" = Antiplanes snail
"Rectiplanes sanctiioannis" = Antiplanes snail | |
Turritella fortilirata turret shell | |
Batillaria mutliformis snail | |
Acirsa ochotensis wentletrap
Amaea thielei wentletrap | |
Triphora conspersa snail | |
Serpulorbis imbricatus Dunker 1860 worm shell | |
Olivella japonica olive snail | |
"Musashia prevostiana" = Fulgoraria (Musashia), "Musashia cf. tokunagai" = Fulgoraria (Musashia)
"Musashia cf. tokunagai" = Fulgoraria (Musashia) volute | |
Nucella lapillus Linnaeus 1758 murex snail
Nucella lamellosa Gmelin 1791 murex snail
Boreotrophon candelabrum murex snail
Thais clavigera murex snail | |
Ocinebrellus aduncus snail | |
"Aulacofusus periscelidus" = Colus (Aulacofusus), Volutharpa ampullacea, Mohnia yanamii, Neptunea arthritica, Neptunea constricta, Neptunea fukuae, Neptunea intersculpta, Neptunea otukai, Japelion pericochlion
"Aulacofusus periscelidus" = Colus (Aulacofusus) true whelk
Volutharpa ampullacea true whelk
Mohnia yanamii true whelk
Neptunea arthritica true whelk
Neptunea constricta true whelk
Neptunea fukuae true whelk
Neptunea intersculpta true whelk
Neptunea otukai true whelk
Japelion pericochlion true whelk | |
Mitrella tenuis snail | |
Sydaphera spengleriana snail | |
Ophiodermella ogurana turrid
Ophiodermella pseudopannus turrid | |
| |
"Adusta onyx" = Erronea (Adusta) onyx
"Adusta onyx" = Erronea (Adusta) onyx Linnaeus 1758 cowry | |
"Lachryma callosa" = Hespererato scabriuscula
"Lachryma callosa" = Hespererato scabriuscula Gray 1832 snail | |
Fusitriton oregonensis Redfield 1846 triton shell | |
"Neverita didyma" = Glossaulax didyma, "Tectonatica janthostoma" = Cryptonatica janthostoma, "Tectonatica janthostomoides" = Cryptonatica andoi
"Neverita didyma" = Glossaulax didyma Röding 1798 moon snail
"Tectonatica janthostoma" = Cryptonatica janthostoma Deshayes 1839 moon snail
"Tectonatica janthostomoides" = Cryptonatica andoi Nomura 1935 moon snail | |
Littorina mandchnrica periwinkle | |
Philippia radiata snail | |
Odostomia aequisculpta, Miralda nishiana, "Odostomia gouldii" = Aartsenia gouldi, Turbonilla edoensis, Turbonilla torquata
Odostomia aequisculpta snail
Miralda nishiana snail
"Odostomia gouldii" = Aartsenia gouldi Carpenter 1865 snail
Turbonilla edoensis snail
Turbonilla torquata Gould 1853 snail | |
Bivalvia | |
"Solemya tokunagai" = Acharax johnsoni
"Solemya tokunagai" = Acharax johnsoni Dall 1891 Awning Clam | |
"Acila mirabilis" = Acila (Acila) mirabilis
"Acila mirabilis" = Acila (Acila) mirabilis Adams and Reeve 1850 divaricate nutclam Subspecies: A. mirabilis vigilia
| |
Nuculana yokoyamai pointed nut clam | |
"Venericardia prolongata" = Miodontiscus prolongatus, Venericardia ferruginea
"Venericardia prolongata" = Miodontiscus prolongatus Carpenter 1864 clam Subspecies: V. prolongata nakamurai
Venericardia ferruginea Clessin 1888 clam | |
Conchocele bisecta Conrad 1849 clam | |
"Lucinoma acutilineatum" = Lucinoma acutilineata
"Lucinoma acutilineatum" = Lucinoma acutilineata Conrad 1849 clam | |
Barnea manilensis clam | |
"Anisocorbula venusta" = Corbula (Anisocorbula)
"Anisocorbula venusta" = Corbula (Anisocorbula) clam | |
Callista adamsi venus clam
Tapes philippinarum venus clam | |
"Spisula voyi" = Mactromeris polynyma
"Spisula voyi" = Mactromeris polynyma Stimpson 1860 clam | |
Chama reflexa Reeve 1846 jewel box | |
Corbicula japonica clam | |
Nemocardium samarangae, "Clinocardium californiense" = Clinocardium (Keenocardium) californiense
Nemocardium samarangae cockle
"Clinocardium californiense" = Clinocardium (Keenocardium) californiense Deshayes 1839 cockle | |
"Macoma calcarea" = Macoma (Macoma) calcarea, "Cadella lubrica" = Tellina (Cadella)
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
"Cadella lubrica" = Tellina (Cadella) tellin clam | |
Mytilus edulis Linnaeus 1758 mussel | |
"Arca boucardi" = Tetrarca boucardi
"Arca boucardi" = Tetrarca boucardi Jousseaume 1894 clam | |
Anadara amicula ark | |
Crassostrea gigas Thunberg 1793 giant Pacific oyster | |
Limatula vladivostokensis file clam
Acesta smithi file clam | |
Anomia chinensis jingle | |
Yabepecten tokunagai, Patinopecten ibaragiensis, Patinopecten planicostulatus, Patinopecten poculum, Patinopecten tokyoensis, Gloripallium crassivenium, "Swiftopecten swiftii" = Chlamys (Swiftopecten) swifti, Chlamys satoi, "Chlamys cosibensis" = Chlamys (Chlamys) cosibensis, "Chlamys iwakiana" = Chlamys (Leochlamys) iwakiana, Cryptopecten vesiculosus, Fortipecten kenyoshiensis
Yabepecten tokunagai scallop
Patinopecten ibaragiensis scallop
Patinopecten planicostulatus scallop
Patinopecten poculum scallop
Patinopecten tokyoensis scallop
Gloripallium crassivenium Yokoyama 1929 scallop
"Swiftopecten swiftii" = Chlamys (Swiftopecten) swifti Bernardi 1858 scallop
Chlamys satoi Yokoyama 1928 scallop
"Chlamys cosibensis" = Chlamys (Chlamys) cosibensis Yokoyama 1911 scallop
"Chlamys iwakiana" = Chlamys (Leochlamys) iwakiana Yokoyama 1925 scallop
Cryptopecten vesiculosus Dunker 1877 scallop
Fortipecten kenyoshiensis scallop | |
Scaphopoda | |
Fissidentalium yokoyamai tusk shell |