Dodatak:Abecedni popis trilobita: B
Ba uredi
Babakovia, Badainjaranaspis, Baikonuraspis, Bailielloides, Balangia, Baltagnostus, Baltoparadoxides, Bandalaspis, Bapingaspis, Barklyella, Basanellus, Basidechenella, Basilicus, Basocephalus, Batchatiella, Bathycheilidae, Bathydiscus, Bathynotellus, Bathyocos, Bathyuridae, Bathyuriscellus, Bathyuriscidella, Bathyuriscopsis, Bathyuriscus, Batyraspis, Bavarillidae, Bayfieldia,
Be uredi
Bedicella, Beigongia, Beikedamaspis, Beishanella, Belgibole, Bellefontia, Belliceps, Bemaspis, Benesovella, Beothuckia, Bergerolimbus, Berkeia, Berkutaspis, Bernia, Bettonia, Bevanopsis,
Bi uredi
Biavertia, Bicella, Bicornipyge, Bidjinella, Bienella, Bifodina, Bigotina, Bigotinella, Bigotinidae, Birmanites, Biscoia, Bitumulina,
Bl uredi
Blainiopsis, Blandiaspis, Blandicephalus, Blanodalmanites,
† Blayacina Cobbold, 1931 uredi
Animalia → Arthropoda → Trilobita Blystagnostus,
Bo uredi
Bodenbenderia, Boeckops, Bohemaspis, Bohemilla Bohemillidae, Bohemiproetus, Bohemopyge, Bojoscutellum, Bolaspidellus, Bolaspididae, Bolboparia, Bolivianaspis, Bolivicrania, Boliviproetus, Bollandia, Bollandiinae, Bondarevites, Bonnaria, Bonnaspis, Bonnia, Bonniella, Bonnima, Bonniopsis, Borealia, Boreoscutellum, Bornemannaspis, Bornholmaspis, Borogothus, Borthaspis, Boschchekulia, Botomella, Bounyongia,
Br uredi
Brachyaspis, Brackebuschia, Brandysops, Branisaspis, Brassicicephalus, Breviphillipsia, Breviscutellum, Brevitermierella, Bridgeia, Briscoia, Bronteopsis, Brutaspis, Brutonia, Brylyella,
Bu uredi
Bubupeltina, Bucksella, Bufoceraurus,
†Bulnibarbi uredi
Animalia → Arthropoda → Trilobita → Ptychopariida Bumastides, Bumastinae, Bumastoides, Bumastus, Burmeisterella, Burminresia, Burtonops,