- Cactus coral
- cactus, Pavona
- Caddisfly
- Cadella‘®
- Cadella lubrica
- caelatus, Nassarius
- caespitosum, Cystophyllum
- Calamagrostis‘®
- Calappa lophos
- calcarea, Macoma
- calcarea izurensis, Macoma
- Calf cowry
- californianus lobatus, Zalophus
- californiense, Clinocardium
- californiense, Keenocardium
- calipygos, Anodonta
- calipygos, Sinanodonta
- Callianassa‘®
- Callianassa nishikawai
- Callianassa shikamai
- Callianassa titaensis
- Callianopsis titaensis
- Calliostoma‘®
- Calliostoma (Calotropis) haliarchus
- Calliostoma (Calotropis) hataii
- Calliostoma consors
- Calliostoma haliarchus
- Calliostoma hataii
- Calliostoma otaniensis
- Calliostoma (Tristichotrochus) consors
- Callispira‘®
- Callista‘®
- Callista brevisiphonata
- Callista matsuraensis
- Callithaca adamsi
- callosa japonica, Vicarya
- Calocedrus notoensis
- Calocycletta costata
- Calopodium‘®
- Calopodium (Kennerlia)‘®
- Calosoma‘®
- Calosoma maximowiczi
- Calyptogena‘®
- Calyptogena chitanii
- Calyptogena kawamurai
- Calyptogena nipponica
- Calyptogena pacifica
- Calyptraea‘®
- Calyptraea hataii
- Calyptraea tubura
- Camarophoria‘®
- Camellia‘®
- Camellia protojaponica
- Camerina bagualensis
- campanulatus, Enkianthus
- camphora, Cinnamomum
- Camphor laurel
- Camphor tree
- Camphorwood
- Camponotus‘®
- CampopleginaeˆŸ‰È
- Camptandrium‘®
- Camptopteris japonica
- Canadoceras‘®
- Canadoceras kossmati
- Canarium (Doxander) japonicum
- Canarium japonicum
- Canavaria‘®
- Cancellaria‘®
- Cancellaria (Habesolatia) nodulifera
- Cancellaria kobayashii
- Cancellaria mutsuana
- Cancellaria nodulifera
- Cancellaria spengleriana
- Cancellaria (Sydaphera) spengleriana
- cancellata, Cyclammina
- Cancellina‘®
- Cancellina nipponica
- Cancer minutoserratus
- Cancer sambonsugii
- candelabrum, Boreotrophon
- candelabrum, Trophon
- candelabrum, Trophonopsis
- candida, Turbonilla
- Canis‘®
- Canis lupus
- Canis lupus subsp. hodophilax
- Cantao yamanai
- capillacea, Meropesta
- capitata f. capitata, Synedra
- capitata, Synedra
- capitata, Synedra capitata
- Capitulum‘®
- Capnuchosphaera‘®
- Capricornis‘®
- Caprifoliaceae‰È
- Caprina uwajimensis
- capsoides, Merisca
- capsoides, Serratina
- Carabidae‰È
- Carabus‘®
- Carassius‘®
- Carbonoschwagerina minatoi
- Carbonoschwagerina morikawai
- Carcharhinus‘®
- Carcharhinus acanthodon
- Carcharhinus brevipinna
- Carcharhinus priscus
- Carcharias‘®
- carcharias, Carcharodon
- Carcharias obliquus
- Carcharias taurus
- Carcharocles megalodon
- Carcharodon‘®
- Carcharodon angustidens
- Carcharodon carcharias
- Carcharodon hastalis
- Carcharodon megalodon
- Carcinophyllum‘®
- Carcinoplax‘®
- Carcinoplax antiqua
- carconensis, Stephanodiscus
- Cardiandra alternifolia
- Cardilia toyamaensis
- Cardilia yudaensis
- Cardinia‘®
- Cardinia toriyamai
- Cardiomya gouldiana
- Cardiomya mitsuganoensis
- Cardita‘®
- Cardita minoensis
- Carditella hanzawai
- Carditellopsis toneana
- Cardium‘®
- Cardium hizenense
- Cardium shiobarense
- CarduoideaeˆŸ‰È
- Carex‘®
- Carex rhynchophysa
- Carex utriculata
- carinata, Arctostrea
- carinata, Tetorimya
- carinatum, Rastellum
- carinatus, Unionites
- carmanahensis, Securella
- Carpenter ant
- carpinoides, Carpinus
- carpinoides, Ulmus
- Carpinus‘®
- Carpinus carpinoides
- Carpinus cordata
- Carpinus erosa
- Carpinus heigunensis
- Carpinus japonica
- Carpinus laxiflora
- Carpinus miocenica
- Carpinus mioturczaninovii
- Carpinus subcordata
- Carpinus subyedoensis
- Carpinus tschonoskii
- Carpolithes japonica
- carrerei, Neocalamites
- Cartilaginous fish
- Cartorhium coristum
- Carya‘®
- Carya cathayensis
- Carya miocathayensis
- Carya ovatocarpa
- Carya sinensis
- Caryophyllaceae‰È
- Caryophyllia‘®
- Caryophyllia compressa
- Caryophyllia (Premocyathus) compressa
- Cassidulina globosa
- Cassidulina japonica
- Cassidulina kasiwazakiensis
- Cassidulina pacifica
- Cassidulina subglobosa
- Cassidulina sublimbata
- Cassidulina yabei
- Cassidulita kasiwazakiensis
- cassinaeformis, Venus
- cassis, Fabiania
- casta, Leucotina
- Castanea‘®
- Castanea crenata
- Castanea miomollissima
- Castanopsis‘®
- Castanopsis miocuspidata
- Castanopsis sieboldii
- castellata, Anadara satowi
- castellata, Scapharca
- castus, Nassarius
- Casuarinaceae‰È
- Cat
- Cataoceramus balticus
- cathayensis, Carya
- Cathaysiopteris‘®
- Cathaysiopteris whitei
- Cat's paw coral
- Caudites posterocostatus
- Caulastraea tumida
- Cavilucina kitamurai
- Cavolinia raritatis
- Cavolinia tridentata
- Chaenomeles japonica
- Chaetetes‘®
- Chaetetes nagaiwaensis
- Chaetetopsis crinita
- Chaetoceros‘®
- Chalaroschwagerina vulgaris
- chalcidicum tanabensis, Cyphastrea
- Chalice bubble snail
- Chalice coral
- Chalky macoma
- Chamaecyparis‘®
- Chamaecyparis pisifera
- Chamidae‰È
- chaneyi, Cladrastis
- chaneyi, Mucuna
- chaneyi, Osmanthus
- , Aokiichthys
- Charonia‘®
- Charonia lampas
- Charybdis (Charybdis) japonica
- Charybdis japonica
- Chauliodontidae‰È
- ChauliodontinaeˆŸ‰È
- Chavania striata
- chehalisensis, Portlandia
- Cheirurus (Crotalocephalus) japonicus
- Cheirurus japonicus
- Chelonia‘®
- Cheloniceras‘®
- Cheloniceras meyendorffi
- Chelonioideaã‰È
- Chelyconus‘®
- Chengiopanax sciadophylloides
- Cherry blossom
- chichibuensis, Anadara
- chichibuensis elegantula, Turritella
- chichibuensis, Mizuhopecten
- chichibuensis, Patinopecten
- chichibuensis, Terebratulina
- chichibuensis, Turritella
- chichibu, Scomberomorus
- Chicoreus asanoi
- Chicoreus asianus
- Chicoreus palmarosae
- Chicoreus (Rhizophorimurex) asanoi
- Chicoreus (Rhizophorimurex) tiganouranus
- Chicoreus tiganouranus
- chigayensis, Thracia
- chikuzenensis, Echinodiscus
- chikuzenensis, Dosinia
- chikuzenensis, Phacosoma
- Chilotherium pugnator
- Chimaera‘®
- chinensis, Anomia
- chinensis, Mactra
- chinensis, Prionailurus bengalensis
- chinensis ssp. rhynchophylla, Fraxinus
- Chinese cork oak
- Chinese hat snail
- Chinese hickory
- Chinese jingle shell
- Chinese leopard cat
- Chinese pond mussel
- Chinese striped-necked turtle
- Chinese swamp cypress
- Chinese sweet gum
- Chinese tallow
- chino var. chino, Pleioblastus
- chino, Pleioblastus
- chino, Pleioblastus chino
- Chinquapin
- Chione (Gnidiella) richthofeni
- Chione (Gnidiella) trigona
- Chione richthofeni
- Chione tateiwai
- Chione trigona
- Chionopsis richthofeni
- Chionopsis trigona
- Chironomid
- Chironomidae‰È
- chitaniana, Mercenaria
- chitaniana, Plesioacirsa
- chitaniana, Securella
- chitanii, Adulomya
- chitanii, Akebiconcha
- chitanii, Calyptogena
- chitanii, Makiyama
- Chiton
- Chlamys‘®
- Chlamys akahirensis
- Chlamys akitana
- Chlamys akutsui
- Chlamys albida
- Chlamys arakawai
- Chlamys ashiyaensis
- Chlamys asperulata
- Chlamys cosibensis
- Chlamys cosibensis heteroglypta
- Chlamys crassivenia
- Chlamys crassivenium
- Chlamys daishakaensis
- Chlamys (Decatopecten) izuensis
- Chlamys farreri
- Chlamys farreri nipponensis
- Chlamys hataii
- Chlamys imanishii
- Chlamys inouei
- Chlamys irregularis
- Chlamys ishidae
- Chlamys islandica
- Chlamys islandica erythrocomata
- Chlamys itoigawae
- Chlamys iwakiana
- Chlamys iwamurensis
- Chlamys izuensis
- Chlamys jousseaumei
- Chlamys kakisakiensis
- Chlamys kaneharai
- Chlamys (Leochlamys) tanassevitschi
- Chlamys (Mimachlamys)‘®
- Chlamys (Mimachlamys) kaneharai
- Chlamys (Mimachlamys) satoi
- Chlamys miurensis
- Chlamys miyatokoensis
- Chlamys mojsisovicsi
- Chlamys nipponensis
- Chlamys nisataiensis
- Chlamys otukae
- Chlamys satoi
- Chlamys squamata
- Chlamys swiftii
- Chlamys swiftii var. etchegoini
- Chlamys (Swiftopecten) swiftii
- Chlamys tanassevitschi
- Chlamys vesiculosus
- Chlamys yagurai
- Chlorophyta–å
- Chlorostoma‘®
- Chlorostoma hiranitensis
- Chlorostoma microstriata
- Choerospondias axillaris var. polymeris
- Choffatia‘®
- Chondrichthyes–Ô
- Chonetes‘®
- Choristodera–Ú
- Chrysanthemum‘®
- chrysanthemum, Cleviceras
- Chrysanthemum makinoi
- Chrysomelidae‰È
- Chuhsiungichthys japonicus
- Chuhsiungichthys yanagidai
- Chusenella‘®
- Chusenella crassa
- Cibicides‘®
- Cibicides datensis
- Cibicides lobatulus
- Cibicides refulgens
- Cibicides pseudoungerianus
- Cibicidoides lobatulus
- Cibicidoides pseudoungeriana
- Cibicidoides wuellerstorfi
- Cicada
- Cicadoideaã‰È
- CichorioideaeˆŸ‰È
- Cidaris‘®
- Ciliatocardium ciliatum
- ciliatum, Ciliatocardium
- ciliatum, Clinocardium
- Cimbex connatus taukushi
- Cimbicidae‰È
- Cinctiscala sagamiensis
- Cinctiscala sagamiensis azumana
- cinerea, Juglans
- cinerea var. megacinerea, Juglans
- cingulata, Cerithideopsilla
- cingulata, Pirenella
- cingulifera, Turritella
- Cinguloterebra fenestrata
- Cinnamomum‘®
- Cinnamomum camphora
- Cinnamomum daphnoides
- Cinnamomum lanceolatum
- Cinnamomum miocenum
- Cinnamomum tenuifolium
- Cinnamomum yabunikkei
- cipangoana, Megacardita
- cipangoana, Venericardia
- cipangoana, Venericardia kiiensis
- Cipangopaludina japonica
- Circe‘®
- circularis, Miliolinella
- circularis, Praeorbulina
- circularis, Praeorbulina glomerosa
- circumpicta, Ostrea
- Cirolanidae‰È
- cisshuensis, Glycymeris
- Citrus flower chafer
- Coast redwood
- coaxans, Geloina
- Cocconeis‘®
- Cocconeis contrerasi
- Cocconeis costata
- Cocconeis diminuta
- Cocconeis neodiminuta
- Cocconeis placentula
- Cocconeis placentula var. euglypta
- Cocconeis thumensis
- Cocconeis vitrea
- Cocconema parvum
- Cocculina japonica
- cochlea, Heteropsammia
- Cockroach
- Cockscomb pearl mussel
- Codonellina montferrandii
- Codonofusiella‘®
- Codonofusiella paradoxica
- Coelogasteroceras‘®
- Coelogasteroceras giganteum
- coignetiae, Vitis
- Colania‘®
- colaniae, Neoschwagerina
- Coleoptera–Ú
- Collembola–Ú
- Colombiceras satowi
- columbiana, Lucinoma
- Comb pen shell
- Comitas‘®
- commixta, Sorbus
- Common box crab
- Common Geloina
- Common reed
- commune, Nonion
- communis, Phragmites
- compacta subsp. minor, Conchocele
- complanata var. japonica, Operculina
- complanata, Operculina
- Compositae‰È
- compressa, Caryophyllia
- compressa, Premocyathus
- Comptonia‘®
- Comptonia japonica
- Comptonia kidoi
- Comptonia naumanni
- Comptoniphyllum‘®
- Comptoniphyllum naumanni
- comta, Cyclotella
- Conasprella sieboldii
- concentricum, Lucinoma
- Conchocele‘®
- Conchocele bisecta
- Conchocele compacta subsp. minor
- Conchocele disjuncta
- Conchocele nipponica
- concinna, Fulgoraria
- concolor, Nicrophorus
- Cone-shaped nassa
- Cone shell
- conflexa, Cypridodella
- confusa kongiensis, Nuculana
- confusa kongiensis, Saccella
- confusa, Nuculana
- confusa, Saccella
- confusa sematensis, Nuculana
- conica, Trachydomia
- conica, Trachyspira
- Conidae‰È
- Conifer
- Coniferophyta–å
- Coniopteris‘®
- Coniopteris burejensis
- conjunctum, Epitonium
- connatus taukushi, Cimbex
- Conodont
- Conodonta–Ô
- conoidalis, Nassarius
- Conotalopia‘®
- consors, Calliostoma
- consors, Tristichotrochus
- constricta, Neptunea
- constricta, Sinonovacula
- constricticollis, Plateumaris
- construens, Fragilaria
- construens var. venter, Fragilaria
- contraria, Antiplanes
- contrerasi, Cocconeis
- controversa, Cornus
- controversa, Swida
- Conus‘®
- Conus (Endemoconus) oyamai
- Conus moniwaensis
- Conus oyamai
- Conus sieboldii
- Conus tokunagai
- Conus tuberculatus
- Conus yoshidensis
- convexa, Glycymeris
- Convexastrea‘®
- convexiuscula, Ginebis
- convexiusculus, Bathybembix argenteonitens
- Cooperina inexpectata
- Cooperina nipponica
- Coptothyris grayi
- Coral cerith
- coralium, Cerithium
- Corallina‘®
- Corbicula‘®
- Corbicula astrata
- Corbicula fuscata var. astrata
- Corbicula japonica
- Corbicula (Mesocorbicula) tetoriensis
- Corbicula sanchuensis
- Corbicula sandai
- Corbicula tetoriensis
- Corbula‘®
- Corbula erythrodon
- Corbula venusta
- Corbula yokoyamai
- Cordaites‘®
- Cordaites japonicus
- Cordaites palmaeformis
- cordata, Aralia
- cordata, Carpinus
- cordata, Liquidambar formosana
- Cordia‘®
- cordiformis, Juglans mandshurica
- Cordylidae‰È
- coreanica, Searlesia
- coreanica, Terebratalia
- coreanicus, Fusolatirus
- Coreidae‰È
- coristum, Cartorhium
- Cork-tree
- cornigera, Yeharaia
- Cornucoquimba kagitoriensis
- Cornucoquimba moniwensis
- Cornucoquimba saitoi
- Cornus‘®
- Cornus controversa
- Cornus kousa
- Cornus miowalteri
- cornutus, Rhinolophus
- coronata correensis, Lunella
- coronata, Triassocampe
- Coronocephalus‘®
- Coronula‘®
- corpulenta, Eoscaphander
- correensis, Lunella
- correensis, Lunella coronata
- correensis, Turbo
- corrugata, Dosinia
- corrugata, Spiroloculina
- coruscus, Mytilus
- Corwenia mizuyagadaniensis
- Corylopsis‘®
- Corylopsis gotoana
- Corylus‘®
- Corylus heterophylla
- Corylus heterophylla var. thunbergii
- Corylus sieboldiana
- Coryphaenoididae‰È
- Coryphodon‘®
- Coscinaraea‘®
- Coscinodiscus‘®
- Coscinodiscus excentricus
- Coscinodiscus lacustris
- Coscinodiscus lineatus
- Coscinodiscus marginatus
- Coscinodiscus robustus f. robustus
- Coscinodiscus yabei
- cosibensis, Chlamys
- cosibensis heteroglypta, Chlamys
- Cosmopolitodus‘®
- Cosmopolitodus hastalis
- costata, Betula
- costata, Calocycletta
- costata, Cocconeis
- Costate button top
- costatum, Suchium
- costatum, Umbonium
- costatus, Turrilites
- Costocyrena‘®
- Costocyrena otsukai
- Costocyrena radiatostriata
- coticazae, Glossaulax
- coticazae, Glossaulax didyma
- coticazae, Neverita
- coticazae, Neverita didyma
- Cottus‘®
- couthouyi, Admete
- cowperi var. yubarensis, Propeamussium
- Cowry
- coxi, Aturia
- Crab
- crabro, Diploneis
- crabro, Pinnularia
- Crab spider
- Cranberry
- Crane
- Craseomys rufocanus
- Craspedosmilia‘®
- crassa, Chusenella
- crassaformis, Globorotalia
- crassa, Glycymeris
- crassa, Pseudofusulina
- Crassatella‘®
- Crassatella (Eucrassatella) nana
- Crassatella (Eucrassatella) yabei
- Crassatella nana
- Crassatella nipponensis
- Crassatella pauxilla
- Crassatella tenuiliratus
- Crassatella yabei
- Crassatellites‘®
- Crassatellites (Eucrassatella) yabei
- Crassatellites nanus
- Crassatellites oblongata
- Crassatellites pauxillus
- Crassatellites tenuiliratus
- Crassatellites yabei
- crassidens, Cyclocardia
- crassicostatus, Hollandites japonicus
- Crassispira takeokensis
- crassitesta, Mytilus
- crassivenia, Chlamys
- crassivenium, Chlamys
- crassivenium, Gloripallium
- crassoradiata, Maedagonia
- crassoradiata, Apiotrigonia
- Crassostrea‘®
- Crassostrea gigas
- Crassostrea gravitesta
- Crassostrea nippona
- crataegifolium, Acer
- crataegifolius, Rubus
- Crataegus maximowiczii
- craticulifera, Neoschwagerina
- crebricostata, Cyclocardia
- crenata, Aspalima
- crenata, Astarte
- crenata, Castanea
- crenata, Deutzia
- crenata, Eucrate
- crenata, Fagus
- crenatum, Cercidiphyllum
- Crenella decussata
- Crenella yokoyamai
- Crenocrassatella foveolata
- Crenomytilus grayanus
- Crenotrapezium‘®
- Crenulilimopsis oblonga
- Crepidula‘®
- Crepidula grandis
- Crepidula isimotoi
- Crepidula jimboana
- Cribroelphidium poeyanum
- Cribrogenerina‘®
- Cricket
- Crimson glory vine
- crinita, Chaetetopsis
- Crinoid
- Crinoidea–Ô
- Crioceras‘®
- crispata, Oulastrea
- crispula, Quercus
- crispula, Quercus mongolica
- crispum, Elphidium
- Cristaria‘®
- Cristaria kuboi
- Cristaria muroii etomoensis
- Cristaria plicata
- Cristaria plicata spatiosa
- Cristaria spatiosa
- cristianensis, Archaeosemantis
- Crocodilia–Ú
- Crocodylidae‰È
- crossei, Mactra
- crossei, Terebratulina
- Cross-sculpture crenella
- Crotalocephalina secta
- Crotalocephalus japonicus
- crucigera, Tellinella
- Cruciloculina triangularis
- crumpii, Ginebis
- crumpii, Lischkeia
- Crump's margarite
- CryptinaeˆŸ‰È
- Cryptobranchidae‰È
- cryptolineata, Securella
- Cryptomeria‘®
- Cryptomeria japonica
- Cryptomya busoensis
- Cryptonatica‘®
- Cryptonatica affinis
- Cryptonatica andoi
- Cryptonatica clausa
- Cryptonatica janthostoma
- Cryptonatica janthostomoides
- Cryptonatica russa
- Cryptonatica tugaruana
- Cryptopecten‘®
- Cryptopecten nux subsp. sematensis
- Cryptopecten sematensis
- Cryptopecten vesiculosus
- Cryptopecten yanagawaensis
- Cryptostephanidium‘®
- Cucujoideaã‰È
- Cucullaea acuticarinata
- Cucullaea ponderosa
- Cudrania tricuspidata
- Cuifastraea‘®
- Culicia japonica
- Culicia stellata
- Culicidae‰È
- Cultellus‘®
- Cultellus attenuatus
- Cultellus izumoensis
- Cultellus otukai
- Cultellus rectangulus
- cumingi, Cycladicama
- cumingii, Batillaria
- cumingii, Cycladicama
- cumingii, Joannisiella
- Cummingella‘®
- cuneata, Laevichlamys
- cuneata, Latona
- Cuneate wedge shell
- cuneatus, Donax
- cuneiformis, Hemidiscus
- cuneiformis, Mya
- Cuneopsis‘®
- Cuneopsis gracilenta
- Cuneopsis okuyamai
- Cunninghamia‘®
- Cunninghamia konishii
- Cuora miyatai
- Cupressaceae‰È
- Cupressioxylon‘®
- Curculionidae‰È
- Curcuma‘®
- curta, Astrea
- curta, Montastrea
- curva, Praeorbulina
- curvata, Rhoicosphenia
- Cuspidaria‘®
- Cuspidaria araii
- Cuspidaria gouldiana septentrionalis
- cuspidata, Taxus
- cuspidatum, Polygonum