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List of fossils in Gunma prefecture

A list of fossils reported from Gunma prefecture, Kanto region, Honshu island, Japan.

Photographs of outcrops and fossils in Gunma prefecture

Paleozoic
Conodonts
Permian (298.9-252.17 Ma)
Cartilaginous fish
Helicoprion sp.
Helicoprion bessonowi
Trilobites
Brachiopods
Echinoids
Crinoids
Corals
Bryozoans
Fusulinids
Triassic (252.17-201.3 Ma)
Bivalves
Eumorphotis multiformis
Jurassic (201.3-145.0 Ma)
Cycads
Otozamites fujimotoi
Ferns
Cladophlebis haiburnensis
Cladophlebis raciborskii
Equisetites iwamuroensis
Thaumatopteris elongata
Cretaceous (145.0-66.0 Ma)
Dinosaurs
Theropods
family Ornithomimidae, Sanchuryu, (Bones)
Nautiloids
Cymatoceras sp.
Ammonoids
Pseudohaploceras japonicum
Bivalves
Costocyrena otsukai
Hayamina sp.
Nippononaia ryosekiana
Pterotrigonia (Pterotrigonia) hokkaidoana => Pterotrigonia hokkaidoana
Rastellum (Arctostrea) carinata => Arctostrea carinata
Tetoria sanchuensis
Trigonia sp.
Cycads
Zamiophyllum sp.
Ferns
Cladophlebis sp.
Onychiopsis elongata
Trace fossils
superorder Dinosauria, Dinosaur (Footprints)
Small animals
Miocene (23.03-5.33 Ma)
Mammals
Paleoparadoxia sp.
infraorder Cetacea, Whale
Sharks, (Teeth)
Sea birds
Echinoids
Bivalves
Cardium shiobarense => Laevicardium shiobarense
Chlamys kaneharai => Mimachlamys kaneharai
Clinocardium sp.
Crassostrea gigas => Magallana gigas, Pacific oyster
Dosinia japonica
Glycymeris sp., Bittersweet clam
Lucinoma sp.
Macoma sp.
Mercenaria sp.
Mercenaria sigaramiensis
Mya sp.
Mytilus giganteus
Panopea japonica, Japanese geoduck
Patinopecten (Kotorapecten) yamasakii => Mizuhopecten yamasakii
Pecten sp.
Solen sp.
Venus sp.
Gastropoda
Turritella sp.
Flowering plants (Trunks)
subfamily Bambusoideae, Bamboo, (Leaves)
Fagus stuxbergii, (Leaves)
Phragmites sp., (Leaves)
Populus sp., Poplar, (Leaves)
Salix sp., Willow, (Leaves)
Conifers
Metasequoia sp., (Leaves)
Foraminifera
Cibicides sp.
Cyclammina sp.
Cyclammina japonica => Cyclammina cancellata
Fursenkoina sp.
Globobulimina sp.
Globorotalia peripheroronda
Melonis sp.
Nodosaria sp.
Praeorbulina glomerosa subsp. circularis => Praeorbulina circularis
Praeorbulina transitoria => Praeorbulina curva
Sponges
Makiyama sp.
Trace fossils
Teredo sp., Shipworm, (Tubes)
Pipe rocks
Miocene-Pliocene
Fishes
Scomber sp., (Entire structure)
family Pleuronectidae, Righteye flounder
Sardinops sp.
Crustaceans
order Decapoda, Decapod
Bivalves
Plants
Quaternary
Mammals
family Cervidae, Deer
Palaeoloxodon naumanni, Naumann's elephant, (Molars)
Petaurista sp.
order Primates, Primate
order Rodentia, Rodent
Sus sp., Pig
Pleistocene (2.58- 0.01Ma)
Mammals
family Cervidae, Deer, (Horns)
Flowering plants (Trunks, Leaves)
Alnus sp., Alder, (Pollen)
Betula sp., Birch, (Pollen)
Carpinus sp., Hornbeam, (Pollen)
Corylus sp., Hazel, (Pollen)
Fagus sp., Beech, (Pollen)
Juglans sp., Walnut tree, (Pollen)
family Poaceae, Grass, (Pollen)
Quercus sp., Oak, (Pollen)
Tilia sp., (Pollen)
Conifers
Cryptomeria sp., (Pollen)
Picea sp., Spruce, (Pollen)
Pinus sp., Pine, (Pollen)
Diatoms
Amphora sp.
Cymbella sp.
Diploneis sp.
Eunotia sp.
Gomphonema sp.
Navicula sp.
Pinnularia sp.
Investigation in progress
Radiolarians