This list of trilobites is a comprehensive listing of all genera that have ever been included in the Arthropod class Trilobita, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (), or were not formally published (), as well as junior synonyms of more established names, and genera that are no longer considered trilobites.
A
Aa
Aayemenaytcheia
Ab
Abadiella (=Parabadiella; =Danagouia) Abakania Abakanopleura Abakolia (=Costadiscus) Abdulinaspis Abharella
Ac
Acadolenus
Acadoparadoxides (=Entomolithus; =Entomostracites; =Eoparadoxides) Acanthalomina Acanthocephalus (=Alomataspis) Acanthometopus Acanthomicmacca (=Chengkouia; =Jaskovitchella; =Myopsomicmacca) Acanthoparypha Acanthophillipsia Acanthopleurella Acanthopyge (=Euarges) Acastava Acaste Acastella Acastellina Acastocephala Acastoides Acastopyge Acernaspis (=Eskaspis; =Otadenus; =Murphycops) Acerocare Acerocarina (=Cyclognathus) Aceroproetus Achatella Acheilops Acheilus Achlysopsis Aciculolenus Acidaspidella Acidaspides Acidaspidina Acidaspis Acidiphorus (=Goniotelina; =Goniotelus; =Goniurus) Acidiscus Acimetopus Acmarhachis (=Cyclagnostus; =Oxyagnostus; =Wanagnostus) Acontheus (=Aneucanthus; =Aneuacanthus) Acrocephalaspina Acrocephalaspis Acrocephalella Acrocephalina Acrocephalinella Acrocephalites (=Acantholenus) Acrocephalops Acrodirotes Acropyge Actinopeltis Acuticryphops Acutimetopus
Ad
Adastocephalum
Adelogonus
Ae
Aedotes
Aegrotocatellus
Aegunaspis
Aethedionide
Aethia
Aethochuangia
Af
Afghancephalites
Afghanocare
Afrops
Ag
Agasella
Agaso
Agelagma (?=Paradistazeris) Agerina (=Otarionellina; =Otarionella) Agnostardis Agnostogonus Agnostotes Agnostus (=Battus; =Acutatagnostus) Agraulaeva Agraulos (=Arion; =Arionius; =Arionides; =Arionellus; =Agrauloides)AguarayaAguilarellaAgyrenellaAiAiaiaspisAidarellaAikhaliellaAinasuellaAistagnostusAjAjacicrepidaAjrikinaAkAkanthargesAkbashichiaAksayaspisAksuaspisAktugaiellaAlAlacephalusAlanisiaAlaskadiscusAlaskaletheAlataupleuraAlataurusAlbansiaAlbertellaAlbertellinaAlbertelloides (=Chuchiaspis)AlberticorypheAlborsellaAlcesteAlcymeneAldanaspisAldanianus (="Comptocephalus") AldonaiaAlekcinellaAligeritesAllobodochusAlloillaenusAlloleiostegiumAllolichasAlokistocare (=Pseudoalokistocare)AlokistocarellaAlokistocaropsisAltaepeltisAltaesajaniaAltaiaspisAltajaspisAltikoliaAltiocculusAltiplanelaspisAltitudellaAluevaAlwynulusAmAmblycraniumAmbonoliumAmecephalinaAmecephalitesAmecephaloidesAmecephalus (=Strotocephalus)AmechilusAmeropiltoniaAmeuraAmgaspidellaAmgaspisAmginiaAmginoerbiaAmginouyiaAmiaspisAmicusAmmagnostus (=Lispagnostus; =Agnostoglossa; =Tentagnostus)AmorphellaAmphilichas (=Paralichas; =Platymetopus; =Acrolichas; =Kerakephalichas; =Tetralichas)Amphitryon (=Caphyra Barrande, 1846; =Brachypleura)AmphoriopsAmphoton (=Eurodeois; =Amphotonella; =Paramphoton; =Sunia)AmpullatocephalinaAmpulliglabellaAmpyx (=Brachyampyx)AmpyxellaAmpyxinaAmpyxinellaAmpyxoidesAmquiaAmzasskiella (=Triplacephalus)