1. Being or occurring within a lung

See also: lung

• family Forficulidae
• family Formicariidae
• family Formicidae
• family Fouquieriaceae
• family Fregatidae
• family Fringillidae
• family Fucaceae
• family Fulgoridae
• family Fumariaceae
• family Funkaceae
• family Furnariidae
• family Gadidae
• family Galbulidae
• family Gasterophilidae
• family Gasterosteidae
• family Gavialidae
• family Gavidae
• family Geastraceae
• family Gekkonidae
• family Gelechiidae
• family Gempylidae
• family Gentianaceae
• family Geoglossaceae
• family Geometridae
• family Geomyidae