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List of fossils in Chiba prefecture
A list of fossils reported from Chiba prefecture, Kanto region, Honshu island, Japan.
Photographs of outcrops and fossils in Chiba prefecture
- Paleozoic
- Crinoids
- Corals
- Fusulinids
- Monodiexodina matsubaishi
- Permian (298.9-252.17 Ma)
- Crinoids
- Corals
- Fusulinids
- Neofusulinella sp.
- Neoschwagerina sp.
- Schwagerina sp.
- Sphaerulina sp.
- Sumatrina sp.
- Yabeina sp.
- Triassic (252.17-201.3 Ma)
- Conodonts
- Neogondolella bulgarica
- Cretaceous (145.0-66.0 Ma)
- Ammonoids
- Ancyloceras sp.
- Cheloniceras meyendorffi
- Colombiceras satowi
- Crioceras (?) sp.
- Oxytropidoceras sp.
- Phylloceras sp.
- Puzosia cf. subcorbarica
- Bivalvia
- Pterotrigonia pocilliformis
- Trigonia sp.
- Scaphopods
- Ginkgopsids
- Czekanowskia sp.
- Cycads
- Nilssonia orientalis
- Nilssonia schaumburgensis var. parvula
- Otozamites sp.
- Ferns
- Cladophlebis sp.
- Cladophlebis exiliformis
- Cladophlebis nihei-takagii
- Trace fossils
- Annelids, (Creeping and crawling marks)
- Oligocene (39.0-23.03 Ma)
- Echinoids, (Needles)
- Foraminifera
- Calcareous algae
- Miocene (23.03-5.33 Ma)
- Ray-finned fishes
- Bivalvia
- Conchocele disjuncta => Conchocele bisecta, Giant cleftclam
- Lucinoma sp.
- Flowering plants
- Liquidambar sp., Sweetgum, (Pollen)
- Corals
- Alveopora sp.
- Astrea sp.
- Dipsastraea sp.
- Stylophora sp., Cat's paw coral
- Table corals => Acropora sp.
- Foraminifera
- Radiolarians
- Calocycletta costata
- Dictyochophyceae
- Distephanus speculum => Dictyocha speculum
- Trace fossils, Lebensspuren
- Pliocene (5.33-2.58 Ma)
- Mammals
- infraorder Cetacea, Whales, (Bones, Bullae)
- Eumetopias sp.
- order Proboscidea, Elephant
- Fishes
- Lepidopsetta mochigarei, Dusky sole, (Entire structure)
- Sharks
- Isurus hastalis => Cosmopolitodus hastalis
- Carcharocles megalodon
- Paper nautilus
- Argonauta awaensis
- Argonauta itoigawai
- Nautiloids
- Aturia coxi
- Crustaceans
- suborder Balanomorpha, Barnacle
- Echinoids
- Echinolampus sp. => Echinolampas sp.
- Bivalvia
- Acesta goliath
- Amussiopecten akiyamae
- Anomia chinensis, Chinese jingle shell
- Azumapecten farreri
- Calyptogena sp.
- Chlamys inouei
- Chlamys miurensis
- Crassatellites tenuiliratus => Crassatella tenuiliratus
- Dosinia sp.
- Glycymeris sp., Bittersweet clam
- Glycymeris convexa>
- Glycymeris rotunda
- Lima zushiensis
- Magallana gigas, Pacific oyster
- Mercenaria chitaniana
- Miyagipecten matsumoriensis
- Ostrea circumpicta
- Oxyperas bernardi, Bernard's venus
- Pecten sp.
- Solen cf. strictus
- Spondylus anacanthus, Nude thorny oyster
- family Veneridae, Venus clam
- Scaphopods
- Gastropoda
- Conus (Endemoconus) oyamai => Conus oyamai
- Cypraea (Zoila) itoigawai => Zoila itoigawai
- Diodora yokoyamai
- Entemnotrochus shikamai
- Ficus filosa, Threaded fig shell
- Galeoastraea amabilis => Bolma amabilis
- Japelion cf. adelphicus, Adelphic japelion
- Perotrochus yoshiwarai => Mikadotrochus yoshiwarai
- Pleurotomaria propehirasei
- Pleurotomaria yoshiwarai => Mikadotrochus yoshiwarai
- Tholitoma nishimotoi
- Turbo guttata => Bolma guttata
- Brachiopods
- Terebratulina peculiaris
- Terebratulina simosensis
- Flowering plants
- Castanopsis sieboldii
- Fagus japonica, Japanese blue beech
- Corals
- Foraminifera
- Bolivinita quadrilatera
- Bulimina marginata
- Cibicides refulgens
- Globigerina bulloides
- Gyroidina orbicularis
- Hanzawaia nipponica
- Melonis pompilioides
- Nonion mampukujiense => Florilus manpukuziensis
- Pyrgo murrhina
- Robulus sp. => Lenticulina sp.
- Uvigerina pygmaea
- Bryozoans
- Sponges
- Nannoplankton
- Calcareous nannoplankton
- Trace fossils
- Boring shells
- Creeping and crawling marks
- Quaternary
- Flowering plants
- Eurya emarginata
- Fagara sp.
- Triadica sp.
- Diatoms
- Actinocyclus ehrenbergii
- Actinocyclus ingens
- Actinoptychus splendens
- Actinoptychus undulatus => Actinocyclus undulatus
- Cocconeis placentula
- Coscinodiscus excentricus
- Coscinodiscus lacustris
- Coscinodiscus lineatus
- Coscinodiscus marginatus
- Cyclotella stylorum
- Diploneis smithii => Navicula smithii f. smithii
- Epithemia zebra => Navicula zebra
- Melosira sulcata => Gaillonella sulcata
- Navicula scutelloides
- Nitzschia punctata => Tryblionella punctata
- Rhaphoneis amphiceros
- Rhopalodia gibberula
- Pleistocene (2.58- 0.01Ma)
- Mammals
- infraorder Cetacea, Whales, (Bones)
- Cervus (Nipponicervus) kazusensis => Cervus kazusensis
- Cervus (Nipponicervus) praenipponicus => Cervus praenipponicus, (Skull, Bones, Horns)
- Cervus (Sika) natsumei => Cervus nippon, Sika deer
- Elaphurus davidianus, Père David's deer
- Eumetopias sp.
- Mammuthus sp., Mammoth
- Mammuthus protomammonteus
- Oriensarctos watasei
- Palaeoloxodon sp.
- Palaeoloxodon naumanni, (Jaws, Molars)
- Sinomegaceros yabei
- Stegodon orientalis
- Steno bredanensis, Rough-toothed dolphin
- Birds
Gavia stellata, Red-throated loon
- Reptiles
Mauremys yabei
Ray-finned fishes, (Bones)
Sharks, (Teeth)
- Crustaceans
- infraorder Brachyura, Crabs, (Claws, Legs)
- suborder Balanomorpha, Barnacle
- Calappa lophos, Common box crab
- family Leucosiidae
- Nihonotrypaea japonica
- Echinuses (Needles)
- family Fibulariidae
- Heliocidaris sp.
- Scaphechinus brevis => Scaphechinus tenuis
- Scaphechinus mirabilis
- Scaphechinus tenuis
Insects
- Bivalves
- Acila sp.
- Anadara sp.
- Anadara broughtonii, Bloody clam
- Anadara satowi
- Anadara (Scapharca) subcrenata => Anadara kagoshimensis
- Angulus venulosa => Megangulus venulosus, Great northern tellin
- Anomia sp., Jingle shell
- Aspalima crenata
- Azumapecten farreri
- Barbatia sp.
- Barnea sp.
- Cadella sp.
- Cadella lubrica
- Callista sp.
- Calyptogena sp.
- Carditellopsis toneana
- Chavania striata
- Chlamys (chlamys) farreri akazara => Azumapecten farreri subsp. nipponensis
- Clementia sp.
- Clinocardium sp.
- Clinocardium braunsi
- Conchocele sp.
- Corbicula japonica, Japanese basket clam
- Crenella decussata, Cross-sculpture crenella
- Cryptomya busoensis
- Cryptopecten sp.
- Cryptopecten nux subsp. sematensis
- Cycladicama sp.
- Cyclina sp.
- Decatopecten sp.
- Donax cuneatus, Cuneate wedge shell
- Dosinia sp.
- Dosinia bilunulata
- Dosinia (Phacosoma) japonica => Dosinia japonica
- Felaniella sp.
- Glycymeris sp., Bittersweet clam
- Glycymeris albolineata, White-lined bittersweet
- Glycymeris pilsbryi
- Glycymeris rotunda
- Glycymeris vestita => Glycymeris aspersa, Clothed bittersweet
- Glycymeris yessoensis
- Gomphina sp.
- Gomphina neastartoides
- Hanleyanus vestalioides
- Hiatula sp.
- Isomonia umbonata
- Jouannetia sp.
- Keenaea samarangae
- Keenocaridum californiense, Bering sea cockle
- Leukoma sp.
- Limaria hakodatensis
- family Limidae, File shell
- Limopsis sp.
- Limopsis adamsiana
- Limopsis tokaiensis
- Limopsis uwadokoi
- Lucinoma sp.
- Lucinoma concentricum
- Lutraria maxima
- Macoma sp.
- Macoma nippoica
- Macridiscus aequilatera, Okiasari
- Macridiscus aequilatera, Kotamagai
- Mactra sp.
- Mactra crossei
- Mactra quadrangularis
- Mactra sulcataria => Mactra chinensis
- Magallana gigas, Pacific oyster
- Megacardita sp.
- Megangulus sp.
- Mercenaria sp.
- Mercenaria stimpsoni, Stimpson's hard clam
- Meretrix sp.
- Meretrix lamarckii
- Mya sp.
- Myadora japonica => Myadora fluctuosa
- Neopycnodonte sp.
- Nipponocrassatella sp.
- Nitidotellina sp.
- Nuculana yokoyamai
- Nuttallia sp.
- Nuttallia ezonis
- Ostrea sp.
- Ostrea gigas => Magallana gigas, Pacific oyster
- superfamily Ostreoidea, Oyster
- Panopea sp.
- Panopea japonica, Japanese geoduck
- Paphia sp.
- Paphia vernicosa
- Parvamussium intuscostatum
- Patinopecten (Mizuhopecten) tokyoensis => Mizuhopecten tokyoensis
- Patinopecten tokyoensis sematensis => Mizuhopecten tokyoensis sematensis
- Pecten sp.
- Pecten albicans, Japanese baking scallop
- Pecten albicans naganumanus => Pecten albicans, Japanese baking scallop
- Pecten excavatus
- Peronidia venulosa => Megangulus venulosus, Great northern tellin
- Petricola sp.
- Phlyctiderma sp.
- Pillucina sp.
- Placamen sp.
- Potamocorbula sp.
- Protocallithaca adamsi, Adam's thin shelled littleneck
- Pseudochama retroversa
- Raeta sp.
- Raeta (Raetina) pellicula => Raeta pellicula
- Rexithaerus sectior
- Ruditapes sp.
- Saccella confusa
- Saccella semataensis
- Saccostrea kegaki
- Saxidomus sp., Washington clam
- Saxidomus purpuratus => Saxidomus purpurata
- Scaeochlamys squamata, Pacific scallop
- Schizothaerus keenae => Tresus keenae, Mirugai clam
- Semelangulus miyatensis
- Siliqua sp.
- Solecurtus sp.
- Solecurtus divaricatus
- Solen sp.
- Solen grandis
- Solen krusensterni
- Solidicorbula sp. => Corbula sp.
- Spisula sp.
- Spisula (Pseudocardium) sachalinensis => Spisula sachalinensis
- Squillaconcha sp. => Borniopsis sp.
- Sunetta sp.
- Tegillarca sp.
- Timoclea minuta
- Tresus sp., Horse clam
- Vasticardium sp.
- Venericardia ferruginea
- Venerupis aspera kioroshiensis
- Venerupis variegata => Venerupis aspera
- Volsella difficilis => Modiolus kurilensis
- Scaphopods
- Dentalium buccinulum
- Pictodentalium sp.
- Pictodentalium vernedei, Vernede's tusk
- Gastropods
- Adamnestia sp.
- Agatha sp.
- Amalda hilgendorfi
- Amalda hinomotoensis
- Architectonica yokoyamai
- Babylonia sp.
- Babylonia japonica, Japanese babylon
- Batillaria sp.
- Batillaria attramentaria, Japanese false cerith
- Batillaria zonalis
- Boreotrophon sp.
- Buccinum leucostoma, Yellow-mouth buccinum
- Calliostoma (Tristichotrochus) consors => Tristichotrochus consors
- Calyptraea sp., Chinese hat snail
- Cancellaria sp.
- Cancellaria nodulifera
- Charonia lampas
- Clathrodrillia flavidula, Javelin turrid
- Clio sp.
- Comitas sp.
- Conasprella sieboldii
- family Conidae, Cone shell
- Conus tuberculatus => Profundiconus tuberculosus
- Cryptonatica andoi, Violet-mouthed moon
- Decorifer sp.
- Diacria trispinosa
- Duplicaria hiradoensis
- Epitonium auritum
- Epitonium (Boreoscala) yokozunai => Boreoscala yokozunai
- Epitonium japonicum
- Epitonium kazusense
- Epitonium sagamiense => Epitonium eusculptum
- Erosaria sp. => Naria sp.
- Eunaticina sp.
- Euspira sp.
- Euspira pallida, Northern moon snail
- Fulgoraria megaspira prevostiana
- Fulvia sp.
- Fusinus sp.
- Fusinus ferrugineus
- Fusinus perplexus
- Ginebis sp.
- Ginebis argenteonitens hirasei
- Glossaulax sp.
- Glossaulax vesicalis
- Granulifusus musasiensis
- Hemifusus sp.
- Homalopoma amussitatum
- Inquisitor sp.
- Inguisitor jeffreysii, Jeffrey's turrid
- Leptothyra amusitata => Homalopoma amussitatum
- Leucotina sp.
- Leucotina gigantea => Leucotina casta
- Lunella coronata coreensis => Lunella correensis
- Macroschisma sp., Narrow slot limpet
- Merica asperella, Elegant nutmeg
- Minolia sp.
- Minolia subangulata, Subangular margarite
- Mitra aff. ebenus => Pusia ebenus, Ebony miter
- Mitrella sp.
- Mitrella lischkei
- Monoplex parthenopeus, Giant triton
- Monotygma eximia
- Nassarius castus
- Nassarius fuscolineatus
- Nassarius praematuratus
- Neoiphinoe unicarinata
- Neptunea arthritica
- Neptunea constricta
- Niveotectura sp.
- Noditerebra (Pristiterebra) tsuboiana => Pristiterebra tsuboiana
- Nucella freycinetii
- Ocinebrellus falcatus, Oyster drill
- Ochetoclava kochi => Rhinoclavis kochi, Koch's vertagus
- Olivella fulgurata f. fabula
- Olivella fulgurata
- Olivella spretoides
- Opalia matajiroi
- Paraclathurella gracilenta
- Paradusta hungerfordi hungerfordi
- Phalium flammiferum, Striped bonnet
- Philine sp.
- Pleurotoma (Drillia) braunsi => Drillia braunsi
- Polinices sagamiensis
- Pristiterebra tsuboiana
- Pseudoetrema fortilirata
- Pteropurpura falcata eurypteron => Ocinebrellus falcatus, Oyster drill
- Puncturella nobilis
- Rapana thomasiana => Rapana venosa, Veined rapa whelk
- Rapana venosa, Veined rapa whelk
- Reticunassa festiva
- family Retusidae, Barrel-bubble snail
- Rhinoclavis kochi, Koch's vertagus
- Ringicula sp.
- Ringicula doliaris
- Sabia sp.
- Semicassis sp.
- Siphonalia sp.
- Siphonalia fusoides, Fusiform whelk
- Siphonalia modificata
- Siphonalia trochulus
- Suavodrillia declivis
- Tegula pfeifferi
- Terebra quoygaimardi
- Thylacodes sp.
- Tonna sp.
- Tonna luteostoma, Gold-mouthed tun
- Triplostephanus fenestratus
- Triton (Priene) aff. oregonensis => Fusitriton aff. oregonensis, Oregon hairy triton
- Trophon (Bereotrophon) candelabrum => Boreotrophon candelabrum
- Turbo sp., (Operculum)
- Turbonilla candida
- family Turridae
- Turritella sp.
- Turritella ikebei
- Umbonium sp.
- Umbonium giganteum
- Umbonium moniliferum
- Volutharpa sp.
- Brachiopoda
- Coptothyris grayi
- Laqueus rubellus
- Flowering plants (Leaves)
- Acer pictum subsp. mono, Painted maple
- Acer rufinerve, Redvein maple
- Alnus japonica, East asian alder, (Cones, Pollen)
- Artemisia sp., (Pollen)
- Betula platyphylla, Japanese white birch, (Pollen)
- Carex sp.
- Carpinus cordata, Sawa hornbeam
- Chrysanthemum sp., (Pollen)
- Cornus sp., Dogwood
- Fagara ailanthoides, Japanese prickly-ash
- Fagus sp., Beech
- Gleditsia japonica, (Thorns)
- Juglans mandshurica var. sachalinensis, Japanese walnut, (Nuts)
- Menyanthes sp., (Seeds)
- Phellodendron sp., Cork-tree
- Potamogeton sp., Pondweed
- Pterocarya sp., Wing nut
- Quercus sp., Oak, (Leaves)
- Quercus dentata, Japanese emperor oak, (Leaves)
- Sapium sebiferum var. pleistoceaca, => Triadica sebifera var. pleistoceaca, (Seeds)
- Scirpus sp., Club-rush
- Styrax japonicus, Japanese snowbell, (Seeds)
- Trapa japonica, (Seeds)
- Trapella sinensis, (Seeds)
- Vitis coignetiae, Crimson glory vine
- Conifers (Leaves)
- Abies sp., Fir, (Leaves, Pollen)
- Chamaecyparis pisifera, Sawara cypress, (Cones)
- Picea sp., Spruce, (Leaves, Pollen)
- Picea maximowiczii, Japanese bush spruce
- Pinus sp., Pine, (Pollen)
- subfamily Taxodiaceae, (Pollen)
- Tsuga sp., (Cones, Leaves, Pollen)
- Corals
- Balanophyllia aff. imperialis
- Caryophyllia (Premocyathus) compressa => Premocyathus dentiformis
- Flabellum cf. distinctum => Flabellum cf. pavoninum
- Flabellum rubrum => Monomyces rubrum
- Flabellum transversale
- Heterocyathus aequicostatus
- Heterocyathus japonicus => Heterocyathus aequicostatus
- Heteropsammia ovalis var. japonica => Heteropsammia cochlea, Walking dendro
- Micrabacia fungulus => Stephanophyllia fungulus
- Micrabacia japonica => Letepsammia superstes
- Notocyathus (Paradeltocyathus) orientalis => Deltocyathoides orientalis
- Notophyllia japonica => Culicia stellata?
Bryozoans
- Foraminifera
- Anomalina sp.
- Bolivinita quadrilatera
- Bulimina aculeata
- Bulimina marginata
- Cassidulina globosa
- Cassidulina pacifica => Burseolina pacifica
- Cassidulina subglobosa => Globocassidulina subglobosa
- Cassidulina yabei
- Cibicides sp.
- Cibicides refulgens
- Cruciloculina triangularis
- Dentalina sp.
- Discorbis sp.
- Elphidium sp.
- Elphidium crispum
- Elphidium subincertum
- Eoguttulina anglica
- Eponides sp.
- Fissurina marginata
- Fissurina cf. orbignyana => Fissurna (Fissurina) cf. orbignyana
- Globigerina bulloides
- Globigerina incompta => Neogloboquadrina incompta
- Globigerinoides ruber
- Globorotalia crassaformis
- Globorotalia inflata
- Globorotalia truncatulinoides
- Globorotalia tumida
- Guttulina sp.
- Gyroidina sp.
- Gyroidina orbicularis
- Hanzawaia nipponica
- Heterolepa dutemplei
- Lagena laevis => Reussoolina laevis
- Lenticulina sp.
- Melonis pompilioides
- Nodosaria radicula
- Nonion sp.
- Nonion scaphum => Nonion commune
- Nonionella sp.
- Planulina sp.
- Pseudononion japonicum
- Pseudopolymorphina sp.
- Pulleniatina obliquiloculata
- Pyrgo sp.
- Pyrgo murrhina
- Quinqueloculina sp.
- Quinqueloculina seminula
- Reussella sp.
- Robulus nikobarensis
- Rosalina globularis
- Rotalia sp.
- Rotalia beccarii => Ammonia beccarii
- Rotalia nipponica => Ammonia nipponica
- Spiroloculina lucida
- Stilostomella lepidula => Siphonodosaria lepidula
- Triloculina trigonula
- Uvigerina pygmaea
- Haptophytes
- Discoaster tamalis
- Trace fossils
- Excirolana sp. => Macaronichnus isp.
- Nihonotrypaea japonica, (Burrows)
- Zirfaea subconstricta => Penitella gabbii
- Echinuses, (Feeding marks)
- Pipe rocks
Holocene (0.01-0 Ma)
- Mammals
- Eschrichtius sp.
- Globicephala sp., Pilot whale, (Bullae)
- Echinuses
- family Laganidae
- Bivalves
- Anadara sp.
- Anadara kagoshimensis
- Anomia sp., Jingle shell
- Corbicula japonica, Japanese basket clam
- Cyclina sp.
- Donax semigranosus
- Dosinia sp.
- Felaniella sp.
- Hyotissa inermis
- Lima sowerbyi => Lima vulgaris, Indo-pacific spiny lima
- Mactra sp.
- Mactra quadrangularis
- Mactrinula sp.
- Magallana gigas, Pacific oyster
- Meretrix sp.
- Meretrix lamarckii
- Modiolus sp., Horsemussel
- Mytilisepta keenae, Japanese bifurcate mussel
- Petricola sp.
- Phlyctiderma sp.
- Rexithaerus sectior
- Ruditapes sp.
- Saxidomus sp., Washington clam
- Solen sp.
- Solen krusensterni
- Sunetta sp.
- Tegillarca sp.
- Gastropoda
- Babylonia sp.
- Batillaria attramentaria, Japanese false cerith
- Charonia lampas
- Crassispira takeokensis
- Lyncina vitellus, Calf cowry
- Glossaulax sp.
- Ocinebrellus falcatus, Oyster drill
- Pristiterebra tsuboiana
- Reishia sp.
- Rhinoclavis kochi, Koch's vertagus
- Thylacodes sp.
- Umbonium sp.
- Flowering plants
- Camellia sp.
- Quercus acuta, Japanese evergreen oak
- Corals
- Acanthastrea hemprichii, Hemprich's brain coral
- Acropora sp.
- Alveopora sp.
- Alveopora cf. verrilliana
- Caulastraea tumida
- Coscinaraea sp.
- Cyphastrea chalcidicum tanabensis => Cyphastrea japonica
- Cyphastrea microphthalma
- Echinophyllia aspera, Chalice coral
- Euphyllia fimbriata
- Favia speciosa => Dipsastraea speciosa
- Favites cf. halicora
- Favites virens => Favites abdita, Large star coral
- Leptastrea purpurea
- Leptoseria minikoiensis => Leptoseris Mycetoseroides, Slender lettuce coral
- Lithophyllon elegans => Lithophyllon undulatum, Lithophyllon mushroom hard coral
- Lobophyllia japonica => Cynarina lacrymalis, Flat cup coral
- Lobophyllia robusta
- Montastrea curta => Astrea curta
- Montipora verrilli
- Oulangia stokesiana subsp. miltoni
- Oulastrea crispata, Zebra coral
- Pavona cf. cactus, Cactus coral
- Pavona frondifera
- Pectinia lactuca japonica => Pectinia lactuca
- Physophyllia ayleni
- Platygyra sp.
- Podabacia elegans
- Podabacia elegans subsp. lobata => Lithophyllon undulatum, Lithophyllon mushroom hard coral
- Podabacia elegans subsp. lobata forma vanderhorsti => Lithophyllon undulatum, Lithophyllon mushroom hard coral
- Psammocora profundacella
- Psammocora superficialis => Psammocora profundacella
- Stylocoeniella armata, Thorn coral
- Stylocoeniella hanzawai => Stylocoeniella armata, Thorn coral
- Stylophora pistillata, Hood coral
- Turbinaria brueggemanni
Diatoms
- Trace fossils
- Boring shells