List of fossils in Toyama prefecture

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List of fossils in Toyama prefecture

A list of fossils reported from Toyama prefecture, Koshinetsu region, Honshu island, Japan.

Photographs of outcrops and fossils in Toyama prefecture

Jurassic (201.3-145.0 Ma)

Ammonoids: Amaltheus sp.; Arieticeras sp.; Canavaria sp.; Deroceras sp. => Eteoderoceras sp.; Grammoceras sp.; Hammatoceras sp.; Phylloceras sp.

Fishes, Ray-finned fish

Bivalvia: Corbicula sp.; Crenotrapezium sp.; Eomiodon sp.; Geratrigonia kurumensis; Chlamys sp. => Mimachlamys sp.; Mytilus sp.; superfamily Ostreoidea, Oyster; Plagiostoma sp.; Plicatula sp.

Brachiopoda: Lingula sp.

Crinoids: Seirocrinus sp.

Conifers: Podozamites sp.; Taxodioxylon sp.; Xenoxylon sp.

Cycads: Ctenis sp.; Nilssonia sp.

Ferns: Cladophlebis nebbensis; Dictyophyllum sp.; Equisetum sp., Horsetail; Onychiopsis elongata

Jurassic-Cretaceous

Reptiles: order Testudines, Turtle

Ginkgopsids: family Ginkgoaceae

Trace fossils: suborder Theropoda, (Footprints); class Aves, Birds, (Footprints)

Cretaceous (145.0-66.0 Ma)

Trace fossils: Toyamasauripus masuiae, (Footprints)

Miocene (23.03-5.33 Ma)

Mammals: Desmostylus sp., (Molars); Paleoparadoxia sp., (Molars); Stegolophodon tudai => Eostegodon tsudai, (Molars)

Sharks (Teeth)

Reptiles: Syllomus aegyptiacus

Nautiloids: Aturia sp.

Crustaceans: suborder Balanomorpha, Barnacle; Bathynomus sp., Giant isopod; Telmessus sp.

Bivalvia: Acila submirabilis; Anadara kakehataensis; Crassostrea gravitesta => Magallana gigas, Pacific oyster; Cyclina sp.; Dosinia ettyuensis; Geloina papua; Geloina yamanei; Glycymeris matumoriensis => Glycymeris matsumoriensis; Glycymeris yamasakii; Glycymeris yessoensis; Lucinoma sp.; Mizuhopecten matumoriensis; Mya cuneiformis; Peronidia zyonoensis => Megangulus zyonoensis, Northern great tellin; Propeamussium sibogai; Scapharca kakehataensis => Anadara kakehataensis

Gastropoda: Cerithidea (Cerithideopsilla) yatsuoensis => Pirenella yatsuoensis; Clio sp.; Limacina sp.; Polytropa yatsuoensis => Nucella yatsuoensis; Telescopium sp.; Turritella sp.; Turritella kadonosawaensis; Vicarya sp.; Vicarya yokoyamai => Potamides yokoyamai; Vicaryella notoensis => Potamides notoensis

Flowering plants: Bruguiera sp., (Pollen); Comptonia naumanni => Comptonia japonica; Excoecaria agallocha, (Pollen); Liquidambar formosana, Formosan gum; Sonneratia sp., (Pollen)

Crinoids, (Stems)

Sponges: Makiyama chitanii

Trace fossils: order Proboscidea, (Footprints)

Pliocene (5.33-2.58 Ma)

Mammals: Whales, (Bones)

Sharks, (Teeth)

Crustaceans: suborder Balanomorpha, Barnacle; infraorder Brachyura, Crabs, (Claws)

Echinoids: Echinarachnius mirabilis => Scaphechinus mirabilis

Bivalvia: Chlamys cosibensis; Conchocele nipponica; Glycymeris yessoensis; Lucinoma sp.; Megacardita ommaensis; Mizuhopecten yessoensis subsp. yokoyamae; Patinopecten tokyoensis hokurikuensis => Mizuhopecten tokyoensis hokurikuensis; Venericardia kiiensis cipangoana => Megacardita ferruginosa

Gastropoda: Bittium horinjiense => Neostylidium horinjiense; Epitonium sp.; Glossaulax reiniana; Neptunea sp.; Turritella saishuensis

Foraminifera: Astrononion aomoriense; Cassidulina japonica => Islandiella japonica; Cassidulina yabei; Cibicides refulgens; Dentalina setanaensis; Elphidium crispum; Glabratella opercularis => Planoglabratella opercularis; Guttulina yamazakii; Hanzawaia nipponica; Lagena striata; Lenticulina rotulata; Melonis pompilioides; Polymorphina sp.

Calcareous algae

Trace fossils

Pleistocene (2.58- 0.01Ma)

Mammals: Palaeoloxodon sp., (Molars, Bones)

Sharks, (Teeth)

Insects: subfamily Donaciinae, Aquatic leaf beetle, (Wings)

Echinuses: Scaphechinus sp.

Bivalvia: Acila sp.; Anadara amicula elongata; Chlamys cosibensis; Conchocele sp.; Dosinia sp.; Glycymeris yessoensis; Liocyma fluctuosum => Liocyma fluctuosa; Lucinoma sp.; Megacardita ommaensis; Mizuhopecten yessoensis yokoyamae; Patinopecten tokyoensis hokurikuensis => Mizuhopecten tokyoensis hokurikuensis; Pecten sp.; Swiftopecten sp.; Tridonta alaskensis => Astarte alaskensis

Gastropoda: Boreotrophon sp.; Cryptonatica andoi, Violet-mouthed moon; Epitonium sp.; Epitonium angulatosimile; Euspira sp.; Nassarius castus; Neoiphinoe unicarinata; Neptunea sp.; Ocinebrellus falcatus, Oyster drill; Lirabuccinum fuscolabiatum; Turritella saishuensis; Umbonium sp.

Flowering plants (Pollen): Actinidia sp., (Seeds); Betula sp., Birch, (Seeds); Fagus crenata, Japanese beech, (Seeds); Juglans mandshurica var. Sieboldiana => Juglans mandshurica var. sachalinensis, Japanese walnut, (Cones); Menyanthes sp., (Seeds); Phellodendron amurensis => Phellodendron amurense, Amur cork tree, (Seeds); Prunus maximowiczii, Miyama cherry, (Seeds); Sapium sebiferum => Triadica sebifera, Chinese tallow, (Seeds); Styrax sp., Snowbell tree, (Seeds)

Conifers (Pollen): Abies veitchii, Veitch's fir, (Cones, Leaves); Chamaecyparis pisifera, Sawara cypress, (Cones, Branches); Picea jezoensis, Jezo spruce, (Cones); Picea jezoensis, Jezo spruce, (Branches, Cones); Picea polita => Picea torano, Tigertail spruce, (Cones); Pinus koraiensis, Korean pine, (Cones, Leaves); Thuja standishii, (Cones, Branches); Tsuga diversifolia, Northern Japanese hemlock, (Cones, Branches)

Trace fossils

Holocene (0.01-0 Ma)

Bivalvia: Corbicula japonica, Japanese basket clam; Mya sp.; Tegillarca sp.

Gastropoda: Batillaria zonalis

Flowering plants (Pollen): Alnus sp., Alder, (Stocks); Celtis sp., Hackberry, (Stocks); Fraxinus platypoda, (Stocks); Morus sp., Mulberry, (Stocks); Quercus dentata, Japanese emperor oak, (Stocks)

Conifers (Pollen): subfamily Taxodiaceae, (Stocks)

Investigation in progress

Bivalvia: Masudapecten sp.; Trapa sp., (Seeds); Waterweed

Trace fossils: Crabs, (Burrows)