Ordovician Trilobites of the United States (alphabetized)

Achatella achates Achatella carleyi Acidaspis cincinnatiensis Acidaspis cincinnatiensis Acidaspis cincinnatiensis [H.o.F.] Allolichas halli Allolichas halli Amphilicas conifrons Amphilichas cornutus [H.o.F.] Amphilichas subpunctatus Anataphrus minnesotensis Anataphrus vigilans Apianurus sp. Basilicus mckeei Bathyurellus sp. Bathyurellus teretus Bathyurus sp. Brachyaspis alacer Brachyaspis alacer Bumastoides beckeri Bumastoides billingsi Bumastoides billingsi Bumastoides holei Bumastoides porrectus Calliops armatus Calyptaulax callicephalus Calyptaulax callicephalus Calyptaulax callicephalus Calyptaulax fredricki Calyptaulax sp. Carolinites killaryensis utahensis Ceratocephala graffhami Ceraurinella scofieldi Ceraurinus icarus Ceraurinus icarus Ceraurinus icarus Ceraurinus sp. Ceraurus milleranus Ceraurus milleranus Ceraurus milleranus Ceraurus plattinensis Ceraurus pleurexanthemus Ceraurus pleurexanthemus Ceraurus pleurexanthemus Ceraurus sp. Ceraurus sp. Ceraurus sp. Ceraurus sp. [H.o.F.] Cryptolithoides ulrichi Cryptolithus bellulus Cryptolithus lorettensis Cryptolithus lorrainensis Cyphoproetus sp. Decoroproetus beecheri Diacanthaspis parvula Diacanthaspis sp. Dionide holdeni Dolichoharpes reticulatus Ectenaspis sp. Eoceraurus trapezoidalis Eomonorachus intermedius Failleana indeterminata Failleana sp. Flexicalymene croneisi Flexicalymene granulosa Flexicalymene granulosa Flexicalymene senaria Flexicalymene sp. Gabriceraurus dentatus Gabriceraurus mifflinensis Gabriceraurus n.sp. Gabriceraurus sp. Gabriceraurus sp. Gravicalymene magnotuberculata Gravicalymene truncatus Hintzeia celsaora Holmiella millerensis Homotelus bromidensis Homotelus florencevillensis Homotelus sp. Hypodicranotus striatulus [H.o.F.] Isoteloides flexus Isotelus brachycephalus Isotelus gigas gigas Isotelus gigas gigas Isotelus gigas gigas Isotelus gigas gigas Isotelus gigas gigas Isotelus iowensis Isotelus maximus [H.o.F.] Isotelus simplex Isotelus sp. Isotelus sp. Isotelus stegops Isotelus walcotti Kanoshia kanoshensis Lachnostoma latucelsum Lemureops lemurei Lonchodomas ? sp. Meadowtownella crosotus Meadowtownella crosotus Meadowtownella trentonensis & Ceraurus pleurexanthemus Odontopleurid n. sp. Pandaspinapyga salsa Platycoryphe christyi Platylichas sp. Pliomerops sp. Presbynileus ibexensis Probolichas kristiae [H.o.F.] Protocalymene ? sp. Protopresbynelius sp. Pseudocybele altinasuta Pseudocybele nasuta Pseudomera cf. barrandei [H.o.F.] Ptyocephalus declivita Ptyocephalus yersini Pugilator deckeri Raymondites spiniger Remopleurides sp. Sceptaspis lincolnensis Sphaerocoryphe robusta Sphaerocoryphe sp. Thaleops laurentiana Thaleops laurentiana Thaleops laurentiana Thaleops mobydicki Triarthrus (Triarthrus) beckii Triarthrus (Triarthus) eatoni Tricopelta breviceps Trigonocerca piochensis Trigonocerca typica Trigonocercella acuta Xylabion sp.