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List of fossils in Ibaraki prefecture
A list of fossils reported from Ibaraki prefecture, Kanto region, Honshu island, Japan.
Photographs of outcrops and fossils in Ibaraki prefecture
- Paleozoic
- Crinoids
- Corals
- order Rugosa
- Fusulinids
- Fusulinella sp.
- Ozawainella sp.
- Pseudofusulina sp.
- Conodonts
- Bryozoans
- Fenestella sp.
- Permian (298.9-252.17 Ma)
- Brachiopods
- Crinoids
- Fusulinids
- Bryozoans
- Triassic-Jurassic
- Plants
- Mesozoic
- Conodonts
- Jurassic (201.3-145.0 Ma)
- Ammonoids
- Kranaosphinctes sp.
- Cretaceous (145.0-66.0 Ma)
- Reptiles
- Mosasaurus sp.
- order Pterosauria, Pterosaur
- Ammonoids
- Baculites inornatus
- Didymoceras awajiense
- Didymoceras nakaminatoense
- Echinuses
- Nipponaster nakaminatoensis
- Bivalves
- Plants (Pollen)
- Andromeda sp., (Leaves)
- Paulownia sp., (Leaves)
- Platanus cfr. septentrionalis, (Leaves)
- Sequoia cfr. jeholensis, (Leaves)
- Taxodium sp.
- Tilia maximoviczianoides, (Leaves)
- Cycads
- Otozamites sp., (Leaves)
- Zamiophyllum sp., (Leaves)
- Zamites megaphyllus, (Leaves)
- Ferns
- Coniopteris sp., (Leaves)
- Equisetites cfr. arcticum => Equisetum cfr. arcticum, (Leaves)
- Seed ferns
- Sabalites oaraiensis => Adiantites oaraiensis, (Leaves)
- Moss
- Trace fossils
- Pipe rocks
- Eocene-Oligocene
- Plants
- Neogene
- Bivalves
- Vicarya yokoyamai => Potamides yokoyamai
- Miocene (23.03-5.33 Ma)
- Mammals
- Dicrocerus tokunagai, (Jaws)
- Eostegodon pseudolatidens, (Molars)
- infraorder Cetacea, Whale, (Bones)
- Fishes, (Scales)
- Sharks
- Carcharodon megalodon => Carcharocles megalodon, (Teeth)
- Carcharhinus sp., (Teeth)
- Isurus hastalis => Cosmopolitodus hastalis, Broad-tooth white shark, (Teeth)
- Starfishes
- class Ophiuroidea, Brittle star
- Echinoids
- Astriclypeus manni
- Bivalves
- Acila sp.
- Amusium sp., Japanese moon scallop
- Anadara watanabei => Arca watanabei
- family Arcidae, Ark clam
- Cardita sp.
- Dosinia corrugata
- Dosinia nagaii => Dosinia nomurai
- family Lucinidae
- Lucinoma sp.
- Macoma optiva
- Megangulus sp.
- superfamily Ostreoidea, Oyster
- Panopea sp.
- Paphia sp.
- Patinopecten sp.
- Patinopecten ibaragiensis => Mizuhopecten planicostulatus
- Patinopecten kimurai => Mizuhopecten kimurai
- Pecten sp.
- Ruditapes sp.
- Saccella kongiensis
- Solen sp.
- Tellina sp.
- Trachycardium multispinosum => Vepricardium multispinosum
- Venericardia siogamensis => Cyclocardia siogamensis
- family Veneridae, Venus clam
- Yoldia sp.
- Scaphopods
- Gastropods
- Buccinum sp.
- family Conidae, Cone shell
- Cryptonatica sp.
- Glossaulax sp.
- family Naticidae, Moon snail
- Olivella iwakiensis
- Polinices meisensis => Euspira meisensis
- Turritella sp.
- Vicarya sp.
- Flowering plants
- Acer sp., Maple, (Leaves)
- Alnus sp., Alder
- Carpinus sp., Hornbeam, (Leaves)
- Castanea sp., Chestnut, (Leaves)
- Comptoniphyllum naumanni => Comptonia japonica
- Cyperus sp.
- Ficus sp., Fig tree, (Leaves)
- Laurus sp., (Leaves)
- Liquidambar formosana, (Leaves)
- Quercus sp., Oak
- Salix sp., Willow, (Leaves)
- Ulmus sp., Elm, (Leaves)
- Zelkova sp.
- Conifers
- Glyptostrobus sp.
- Metasequoia sp., (Leaves)
- Pinus trifolia
- Ferns
- family Dryopteridaceae
- Equisetum sp., Horsetail
- Foraminifera
- Lepidocyclina sp.
- Miogypsina kotoi
- Operculina complanata
- Sponges (Spicules)
- Makiyama sp.
- Diatoms
- Trace fossils
- Pliocene (5.33-2.58 Ma)
- Mammals
- Stegodon elephantoides, (Molars)
- Sharks, (Teeth)
- Echinoids
- Bivalvia
- Acila sp.
- Anadara sp.
- Lucinoma annulata, Western ridged lucina
- Macoma tokyoensis
- Megayoldia japonica
- Patinopecten sp.
- Gastropoda
- Umbonium sp.
- Corals
- Diatoms
- Pleistocene (2.58- 0.01Ma)
- Mammals
- Palaeoloxodon namadicus naumanni => Palaeoloxodon naumanni, Naumann's elephant, (Molars, Bones)
- Echinoids
- Hemicentrotus sp.
- family Laganidae
- Scaphechinus mirabilis
- Bivalvia
- Acila sp.
- Anadara sp.
- Anadara kagoshimensis
- Azumapecten farreri
- Arca boucardi
- Atrina pectinata, Comb pen shell
- Chavania striata
- Corbicula sp.
- Corbicula japonica, Japanese basket clam
- Corbula venusta
- Dinocardium braunsi => Clinocardium braunsi
- Dosinia sp.
- Erodona amurensis => Potamocorbula amurensis, Amur river clam
- Felaniella usta
- Fulvia sp.
- Glycymeris sp., Bittersweet clam
- Glycymeris albolineata, White-lined bittersweet
- Glycymeris yessoensis
- Keenocardium californiense, Bering sea cockle
- Leukoma sp.
- Lucinoma sp.
- Macoma tokyoensis
- Mactra sp.
- Magallana gigas, Pacific oyster
- Megangulus sp.
- Mercenaria sp.
- Meretrix sp.
- Microcirce sp.
- Neotrapezium liratum, Quadrate trapezium
- Nitidotellina sp.
- Nuttallia sp.
- Ostrea denselamellosa
- Ostrea gigas => Magallana gigas, Pacific oyster
- Panopea sp.
- Patinopecten tokyoensis => Mizuhopecten tokyoensis
- Pecten sp.
- Protocallithaca adamsi, Adams' thin shelled littleneck
- Raeta yokohamensis => Raeta pulchella
- Ruditapes sp.
- Ruditapes variegatus => Venerupis aspera
- Saxidomus sp., Washington clam
- Sinanodonta sp.
- Sinanodonta lauta
- Solen sp.
- Solen grandis
- Solen krusensterni
- Spisula sp.
- Sunetta sp.
- Tegillarca sp.
- Tresus sp., Horse clam
- Vasticardium sp.
- Venus cassinaeformis
- Scaphopoda
- Dentalium octangulatum, Octagonal tusk shell
- Gastropoda
- Babylonia sp.
- Cryptonatica andoi, Violet-mouthed moon
- Epitonium conjunctum
- Glossaulax sp.
- Homalopoma amussitatum
- Leucotina dianae
- Mitrella lischkei
- Mitrella yabei
- Monotygma sp.
- Monotygma eximia
- Nassarius conoidalis, Cone-shaped nassa
- Nassarius praematuratus
- Neoiphinoe unicarinata
- Neptunea arthritica
- Odostomia kizakiensis
- Odostomia hilgendorfi
- Odostomia limpida
- Odostomia optapa
- subclass Patellogastropoda, True limpet
- Propebela yokoyamai
- Pseudoetrema fortilirata
- Rapana rapiformis, Turnip-shaped rapana
- Rapana venosa, Veined rapa whelk
- Reticunassa festivus
- Ringicula sp.
- Siphonalia fusoides, Fusiform whelk
- Tonna sp.
- Turbonilla candida
- Umbonium sp.
- Volutharpa sp.
- Flowering plants (Nuts, Pollen)
- Ambrosia sp., (Pollen)
- family Asteraceae, (Pollen)
- family Betulaceae, (Pollen)
- family Caryophyllaceae, Pink family, (Pollen)
- family Empetraceae, (Pollen)
- family Fagaceae, (Pollen)
- Firmiana sp., Parasoltree, (Pollen)
- family Haloragaceae, (Pollen)
- family Juglandaceae, (Pollen)
- Trapa sp., (Seeds)
- Conifers
- Abies sp., Fir, (Pollen)
- Cryptomeria sp., (Pollen)
- Cunninghamia sp., (Pollen)
- family Cupressaceae, (Pollen)
- Picea sp., (Pollen)
- family Taxodiaceae, (Pollen)
- Foraminifera
- Elphidium sp.
- Trace fossils
- Pipe rocks
- Boring shells
- Excirolana sp. => Macaronichnus isp.
- Investigation in progress
- Conifers
- Cephalotaxus sp., Plum yew