La
Labiostria, Labradoria, Lachnostoma, Lacunoporaspis, Lakaspis, Lamproscutellum, Lancastria, Landyia, Laneites, Langgonbole, Langgoni, Lannacus, Lapidaria, Lasaguaditas, Laticephalus, Latiglobusia, Latilorenzella, Latiproetus, Latiredlichia, Latoucheia, Lauzonella, Lavsanodiscus,
Le
Lecanoaspis, Lecanopleura, Lecanopyge, Leiaspis, Leichneyella, Leimitzia, Leiolichas, Leioscutellum, Leiostegiidae, Leiostegium, Leiostrototropis, Lejopyge, Lenadiscus, Lenallina, Lenaspis, Leocephalus, Leptochilodiscus, Leptopilus, Leptoplastus, Lermontovia, Leviceraurus, Levisia,
Li
Liaoningella, Liaotropis, Libertella, Libristoma, Librostoma, Lichakephalidae, Lichakephalina, Lichengia, Lichida, Lichidae, Ligiscus, Limbadiscus, Limpeina, Linguagnostus, Linguaphillipsia, Linguaproetus, Linguchuangia, Lingukainella, Liobole, Liobolina, Liocare, Liokootenia, Liolophops, Liomegalaspides, Liopeishania, Liopelta, Liosolenopleura, Liostracinidae, Liostracinoides, Liriamnica, Lisaniidae, Lisogoragnostus, Lisogorites, Listroa, Litagnostus, Litaspis, Litocephalus, Litometopus,
Ll
Llandovacaste, Llanoaspididae, Lloydia,
Lo
Lochmanaspis, Loganopeltis, Lomsucaspis, Lonchocephalidae, Longduia, Longianda, Longiproetus, Lophiokephalion, Lophoholcus, Lorenzellidae, Lotosoides, Loxonepea, Loxopeltis,
Lu
†Luaspides Duan 1966
- †Luaspides brevica Zhang and Yuan 1981
Trilobita → Ptychopariida → Luaspididae
†Porodica Luaspididae Zhang and Yuan 1981
- †Luaspides Duan 1966
Trilobita → Ptychopariida → Ptychopariina
†Luaspis Hupe 1953
Lugalella, Luia, Lunacephalus, Lunacrania, Lunolenus, Luojiashania, Luottuolingia, Lusampa, Luxella, Luyanhaoia,
Ly
Lycophron, Lydiaspis, Lynaspis, Lyralichas,