family Haemodoraceae family Haemoproteidae family Haemulidae family Halictidae family Haliotidae family Haloragaceae family Haloragidaceae family Hamamelidaceae family Helicidae family Helodermatidae family Helotiaceae family Helvellaceae family Hemerobiidae family Hemerocallidaceae family Hemiprocnidae family Hemiramphidae family Heteromyidae family Hexagrammidae family Hexanchidae family Hippoboscidae family Hippocastanaceae family Hippopotamidae family Hipposideridae family Hirudinidae family Hirundinidae family history family Holocentridae family Holothuridae family Homaridae family Hominidae family Hostaceae family Hyacinthaceae family Hyaenidae family Hydnaceae family Hydnoraceae family Hydrangeaceae family Hydrobatidae family Hydrocharidaceae family Hydrocharitaceae family Hydrochoeridae
| family Hydrophidae family Hydrophyllaceae family Hygrophoraceae family Hylidae family Hylobatidae family Hymenophyllaceae family Hypericaceae family Hyperodontidae family Hypocreaceae family Hypodermatidae family Hypoxidaceae family Hystricidae family Ibidiidae family Ichneumonidae family Ichthyosauridae family Icteridae family Iguania family Iguanidae family Iguanodontidae family Indicatoridae family Indriidae family Ipidae family Irenidae family Iridaceae family Isoetaceae family Istiophoridae family Isuridae family Ixodidae family Jassidae family jewels family Juglandaceae family Juncaceae family Juncaginaceae family Jungermanniaceae family Kalotermitidae family Kasuwonidae family Kinosternidae family Kyphosidae family Labiatae family Labridae
| family Lacertidae family Lactobacillaceae family Lactobacteriaceae family Lamiaceae family Laminariaceae family Lamnidae family Lampridae family Lampyridae family Laniidae family Lanthanotidae family Lardizabalaceae family Laricariidae family Laridae family Lasiocampidae family Latimeridae family Lauraceae family Lecanoraceae family Lecythidaceae family Leguminosae family Leiopelmatidae family Leitneriaceae family Lemnaceae family Lemuridae family Lennoaceae family Lentibulariaceae family Lepadidae family Lepidobotryaceae family Lepidodendraceae family Lepiotaceae family Lepismatidae family Lepisosteidae family Leporidae family Leptodactylidae family Leptotyphlopidae family Liliaceae family Limacidae family Limulidae family Linaceae family line family Liopelmidae
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