- Fabaceae, family
- Fabiania cassis
- fabula, Olivella fulgurata
- Fabulina, genus
- Fabulina minuta
- Fabulina miyatensis
- Fabulina notoensis
- fabum, Elphidium
- fabum, Nonion
- Fagaceae, family
- Fagara, genus
- Fagara ailanthoides
- fagifolia, Parrotia
- Fagus, genus
- Fagus antipofi
- Fagus crenata
- Fagus ferruginea
- Fagus hayatae
- Fagus japonica
- Fagus microcarpa
- Fagus nathorsti
- Fagus palaeocrenata
- Fagus stuxbergii
- falcata eurypteron, Pteropurpura
- falcata, Pteropurpura
- falcatum, Dictyophyllum
- falcatus, Ocinebrellus
- fallax, Wisteria
- Fallopia japonica
- Fallopia sachalinensis
- False gharial
- Falsicatenipora shikokuensis
- farreri, Azumapecten
- farreri nipponensis, Azumapecten
- fasciculatum, Ribes
- fastigiata, Puncturella
- fastosum, Clinocardium
- Favia speciosa
- Favites abdita
- Favites halicora
- Favites virens
- Favosites, genus
- Favosites asper
- Favosites baculoides
- Favosites forbesi sugiyamai
- Favosites hidensis
- favus f. quadrata, Triceratium
- favus var. quadrata, Triceratium
- fax barbarense, Elphidium
- Felaniella, genus
- Felaniella usta
- Felis, genus
- Fenestella, genus
- Fenestella retiformis
- fenestrata, Cinguloterebra
- Fenestrate top shell
- fenestratus, Tectus
- fenestratus, Triplostephanus
- Fern
- ferruginata, Diplodonta
- ferruginea, Anadara
- ferruginea, Cyclocardia
- ferruginea, Fagus
- ferruginea, Venericardia
- ferrugineus, Fusinus
- ferruginosa, Megacardita
- ferruginosa, Venericardia
- ferus subsp. przewalskii, Equus
- festiva, Nassarius
- festiva, Reticunassa
- Festuca, genus
- Fibularia acuta
- Fibulariella acuta
- Fibulariidae, family
- Ficus, genus
- Ficus filosa
- Ficus tiliaefolia
- Fig tree
- filatovae, Astarte
- filatovae, Tridonta
- File shell
- filosa, Ficus
- Finella pupoides
- fimbriata, Euphyllia
- Fin-footed mammal
- Finless porpoise
- Fir
- firma, Abies
- firma, Alnus
- Firmiana, genus
- Fissidentalium, genus
- Fissidentalium vernedei
- Fissidentalium yokoyamai
- Fissurina (Fissurina) orbignyana
- Fissurina marginata
- Fissurina orbignyana
- Fistulipora, genus
- flabellatum, Psygmophyllum
- Flabellidae, family
- Flabellum, genus
- Flabellum distinctum
- Flabellum (Flabellum) pavoninum
- Flabellum (Flabellum) transversale
- Flabellum pavoninum
- Flabellum rubrum
- Flabellum transversale
- flammiferum, Phalium
- Flat cup coral
- flavidula, Clathrodrillia
- flavimanus, Acanthogobius
- flexuosa, Koninckocarinia
- flexuosa, Vitis
- floribunda, Wisteria
- florida, Tiborella
- Florilus manpukuziensis
- Flowering plant
- fluctuosa, Liocyma
- fluctuosa, Myadora
- fluctuosum, Liocyma
- Fly
- Foegia yokoyamai
- Fohsella peripheroacuta
- foliata, Barbatia
- Follicucullus, genus
- fontanellense, Fontanelliceras
- Fontanelliceras fontanellense
- Foram
- Foraminifera, phylum
- forbesi sugiyamai, Favosites
- Forked venus clam
- Forked viburnum
- Formica, genus
- Formicidae, family
- formosana, Liquidambar
- formosana cordata, Liquidambar
- formosana, Salvinia
- Formosan gum
- Formosa rock macaque
- fortilirata, Neohaustator
- fortilirata nojimaensis, Neohaustator
- fortilirata, Pseudoetrema
- Fortipecten kenyoshiensis
- Fortipecten takahashii
- Fortunearia, genus
- fortunei var. alpina, Saxifraga
- fortunei var. incisolobata, Saxifraga
- foveolata, Crenocrassatella
- foveolata, Ventricolaria
- foveolata, Venus
- foveolatus, Bathytormus
- Fox
- fragarioides var. major, Potentilla
- fragarioides, Potentilla
- Fragilaria, genus
- Fragilaria brevistriata
- Fragilaria construens
- Fragilaria construens var. venter
- Fragilaria lapponica
- Fragilaria venter var. venter
- Fragrant snowbell
- fragilissima, Hauerina
- fragilissima, Pseudohauerina
- fragilis, Theora
- Fraxinus, genus
- Fraxinus chinensis ssp. rhynchophylla
- Fraxinus japonica
- Fraxinus k-yamadai
- Fraxinus lanuginosa
- Fraxinus lanuginosa f. serrata
- Fraxinus mandshurica var. japonica
- Fraxinus platypoda
- Fraxinus spaethiana
- Frenelopsis hoheneggeri
- Freshwater goby
- Freshwater sculpin
- freycinetii subsp. alabaster, Nucella
- freycinetii, Nucella
- Frog
- frondifera, Pavona
- Frustulia amphipleuroides
- Frustulia lanceolata
- Frustulia rhomboides var. amphipleuroides
- fuganjiensis, Propeamussium
- fujiii, Pinus
- fujimotoi, Beedeina
- fujimotoi, Dosinia
- fujimotoi, Fulgoraria
- fujimotoi, Otozamites
- fujimotoi, Tosapecten suzukii
- fujinensis, Serripes
- fujitai, Lima
- fujitai, Parancistrolepis
- fukazawai, Protexanites
- Fukuiraptor kitadaniensis
- Fukuisaurus tetoriensis
- fukujiensis, Heliolites
- fukujiensis, Isorthis
- fukujiensis, Palaeoleperditia
- fukujiensis, Profusulinella
- fukushimaensis, Amphicoryna
- fukushimaensis, Lagenonodosaria
- Fulgoraria, genus
- Fulgoraria ashiyaensis
- Fulgoraria concinna
- fulgurata f. fabula, Olivella
- Fulgoraria fujimotoi
- Fulgoraria kamakurensis
- Fulgoraria koshibensis
- Fulgoraria hirasei noguchii
- Fulgoraria magna
- Fulgoraria masudae
- Fulgoraria megaspira magna
- Fulgoraria megaspira prevostiana
- Fulgoraria (Musashia) striata
- Fulgoraria (Musashia) yanagidaniensis
- Fulgoraria (Neopsephaea) koshibensis
- Fulgoraria noguchii
- fulgurata, Olivella
- Fulgoraria prevostiana
- Fulgoraria (Psephaea), genus
- Fulgoraria (Psephaea) fujimotoi
- Fulgoraria (Psephaea) striata
- Fulgoraria (Psephaea) yanagidaniensis
- Fulgoraria striata
- Fulgoraria yanagidaniensis
- Fulvia, genus
- Fulvia hungerfordi
- Fulvia mutica
- fungulus, Micrabacia
- fungulus, Stephanophyllia
- Fungus gnat
- furcatum, Viburnum
- Fursenkoina, genus
- furtiva, Liocyma
- furuichii, Astraea
- fusca, Cerithidium
- fuscata var. astrata, Corbicula
- fuscata, Macaca
- Fuscocardium braunsi
- fuscolabiata, Searlesia
- fuscolabiatum, Lirabuccinum
- fuscolineatus, Nassarius
- fuscum, Cerithidium
- fusiforme, Antillophos
- fusiformis, Japonocapsa
- fusiformis, Pentactinocarpus
- Fusiform whelk
- Fusinus, genus
- Fusinus ferrugineus
- Fusinus perplexus
- Fusinus tuberosus
- Fusitriton, genus
- Fusitriton oregonensis
- fusoides, Siphonalia
- Fusolatirus coreanicus
- Fusulina itadoriensis
- Fusulina onoi
- Fusulina shikokuensis
- Fusulinella, genus
- Fusulinella biconica
- Fusulinella bocki
- Fusulinella pseudobocki
- Fusulinid
- Fusulinida, order
- Futabasaurus suzukii
- fuwensis, Neoschwagerina