Lamellibranchia, Classis
– synonym of Bivalvia, Classis
Lamellibranchia | De Blainville, 1824, Classis
– synonym of Bivalvia, Classis
Lampropidae, Familia
Lamprops, Genus
Lanice, Genus
Laodicea, Genus
Laodiceidae, Familia
Laodiceoidae, Superfamilia
Larvacea, Classis
– synonym of Appendicularia, Classis
Larvacea | Herdman, 1891, Classis
– synonym of Appendicularia, Classis
Lebbeus, Genus
Lensia, Genus
Lepadidae, Familia
Lepadomorpha, Subordo
Lepas, Genus
Leptocardi, Subphylum
– synonym of Cephalochordata, Subphylum
Leptocardi | Bonaparte, 1956, Subphylum
– synonym of Cephalochordata, Subphylum
Leptolida, Classis
Leptolinae, Classis
– synonym of Leptolida, Classis
Leptolinae | Haeckel, 1879, Classis
– synonym of Leptolida, Classis
Leptomysini, Subfamilia
Leptomysis, Genus
Leptostylis, Genus
Leptothecatae, Subclassis
Leuckartiara, Genus
Leucon, Genus
Leuconidae, Familia
Limacina, Genus
Limacinacea, Superfamilia
Limacinidae, Familia
Limnomedusae, Subclassis
Liriope, Genus
Lizzia, Genus
Loadiceoidea, Superfamilia
Lobata, Ordo
Loliginidae, Familia
Loligo, Genus
Lophogaster, Genus
Lophogastridae, Familia
Lovenella, Genus
Lovenellidae, Familia
Lovenelloidea, Superfamilia
Luciferidae, Familia
Luidia, Genus
Luidiidae, Familia
Lysiosquilloidea, Superfamilia