Acanthoscapha Ulrich & Bassler, 1923 † (original description)
Acanthoscapha (Acanthoscapha) Ulrich & Bassler, 1923 † (original description)
Acanthoscapha (Acanthoscapha) navicula (Ulrich, 1891) † represented as Acanthoscapha navicula (Ulrich, 1891) † (new combination reference)
Acanthoscapha navicula (Ulrich, 1891) † (new combination reference)
Acronotella Ulrich & Bassler, 1923 † (original description)
Acronotella shideleri Ulrich & Bassler, 1923 † (original description)
Aechmina richmondensis Ulrich & Bassler, 1923 † (original description)
Aechmina simplex Ulrich & Bassler, 1923 † (original description)
Aechmina ventralis Ulrich & Bassler, 1923 † (original description)
Aparchites alleghaniensis Ulrich & Bassler, 1923 † (original description)
Aparchites obliquatus Ulrich & Bassler, 1923 † (original description)
Aparchites punctillosus Ulrich & Bassler, 1923 † (original description)
Aparchites variolatus Ulrich & Bassler, 1923 † accepted as  † (original description)
Aparchitidae Ulrich & Bassler, 1923 † (original description)
Apatobolbina Ulrich & Bassler, 1923 † (original description)
Apatobolbina acuta Ulrich & Bassler, 1923 † (original description)
Apatobolbina appressa Ulrich & Bassler, 1923 † (original description)
Apatobolbina granifera Ulrich & Bassler, 1923 † (original description)
Apatochilina Ulrich & Bassler, 1923 † (original description)
Beyrichia hartnageli Ulrich & Bassler, 1923 † represented as  † (original description)
Beyrichia kirki Ulrich & Bassler, 1923 † represented as  † (original description)
Beyrichia lakemontensis Ulrich & Bassler, 1923 † represented as  † (original description)
Beyrichia mesleri Ulrich & Bassler, 1923 † represented as  † (original description)
Beyrichia normalis Ulrich & Bassler, 1923 † accepted as  † (original description)
Beyrichia tonolowayensis Ulrich & Bassler, 1923 † (original description)
Beyrichia veronica Ulrich & Bassler, 1923 † represented as  † (original description)
Bolbibollia Ulrich & Bassler, 1923 † (original description)
Bolbibollia labrosa Ulrich & Bassler, 1923 † (original description)
Bollia immersa Ulrich & Bassler, 1923 † (original description)
Bollia nitida Ulrich & Bassler, 1923 † (original description)
Bollia pulchella Ulrich & Bassler, 1923 † (original description)
Bonnemaia Ulrich & Bassler, 1923 † (original description)
Bonnemaia celsa Ulrich & Bassler, 1923 † (original description)
Bonnemaia crassa Ulrich & Bassler, 1923 † (original description)
Bonnemaia fissa Ulrich & Bassler, 1923 † (original description)
Bonnemaia longa Ulrich & Bassler, 1923 † (original description)
Bonnemaia notha Ulrich & Bassler, 1923 † (original description)
Bonnemaia obliqua Ulrich & Bassler, 1923 † (original description)
Bonnemaia oblonga Ulrich & Bassler, 1923 † (original description)
Bonnemaia perlonga Ulrich & Bassler, 1923 † (original description)
Bonnemaia pulchella Ulrich & Bassler, 1923 † (original description)
Bonnemaia rudis Ulrich & Bassler, 1923 † (original description)
Bonnemaia transita Ulrich & Bassler, 1923 † (original description)
Bythocypris keyserensis Ulrich & Bassler, 1923 † (original description)
Bythocypris pergracilis Ulrich & Bassler, 1923 † (original description)
Bythocypris phaseolina Ulrich & Bassler, 1923 † (original description)
Chilobolbina Ulrich & Bassler, 1923 † (original description)
Chilobolbina hartfordensis Ulrich & Bassler, 1923 † accepted as  † (original description)
Chilobolbina punctata Ulrich & Bassler, 1923 † (original description)
Coelochilina Ulrich & Bassler, 1923 † (original description)
Cornikloedenia ventricornis obsoleta (Ulrich & Bassler, 1923) Henningsmoen, 1955 † (original description)
Cornikloedenia ventricornis ventricornis (Ulrich & Bassler, 1923) Henningsmoen, 1955 † (original description)
Cytheracea Baird, 1850 accepted as Cytheroidea Baird, 1850 (taxonomy source)
Dibolbina Ulrich & Bassler, 1923 † (original description)
Dibolbina cristata Ulrich & Bassler, 1923 † (original description)
Dibolbina producta Ulrich & Bassler, 1923 † (original description)
Dizygopleura Ulrich & Bassler, 1923 † accepted as Poloniella (Dizygopleura) Ulrich & Bassler, 1923 † (original description)
Dizygopleura acuminata Ulrich & Bassler, 1923 † (original description)
Dizygopleura affinis Ulrich & Bassler, 1923 † (original description)
Dizygopleura asymmetrica Ulrich & Bassler, 1923 † (original description)
Dizygopleura bulbifrons Ulrich & Bassler, 1923 † (original description)
Dizygopleura carinata Ulrich & Bassler, 1923 † (original description)
Dizygopleura concentrica Ulrich & Bassler, 1923 † (original description)
Dizygopleura cranei Ulrich & Bassler, 1923 † (original description)
Dizygopleura falcifera Ulrich & Bassler, 1923 † (original description)
Dizygopleura gibba Ulrich & Bassler, 1923 † (original description)
Dizygopleura intermedia Ulrich & Bassler, 1923 † accepted as  † (original description)
Dizygopleura lacunosa Ulrich & Bassler, 1923 † (original description)
Dizygopleura loculata Ulrich & Bassler, 1923 † (original description)
Dizygopleura macra Ulrich & Bassler, 1923 † (original description)
Dizygopleura micula Ulrich & Bassler, 1923 † (original description)
Dizygopleura minima Ulrich & Bassler, 1923 † (original description)
Dizygopleura perrugosa Ulrich & Bassler, 1923 † (original description)
Dizygopleura pinguis Ulrich & Bassler, 1923 † (original description)
Dizygopleura planata Ulrich & Bassler, 1923 † (original description)
Dizygopleura pricei Ulrich & Bassler, 1923 † (original description)
Dizygopleura proutyi Ulrich & Bassler, 1923 † (original description)
Dizygopleura simulans Ulrich & Bassler, 1923 † (original description)
Dizygopleura stosei Ulrich & Bassler, 1923 † (original description)
Dizygopleura subdivisa Ulrich & Bassler, 1923 † (original description)
Dizygopleura subovalis Ulrich & Bassler, 1923 † (original description)
Dizygopleura swartzi Ulrich & Bassler, 1923 † (original description)
Dizygopleura unipunctata Ulrich & Bassler, 1923 † accepted as  † (original description)
Dizygopleura virginica Ulrich & Bassler, 1923 † (original description)
Drepanellidae Ulrich & Bassler, 1923 † (original description)
Drepanellina Ulrich & Bassler, 1923 † (original description)
Drepanellina clarki Ulrich & Bassler, 1923 † (original description)
Drepanellina claypolei Ulrich & Bassler, 1923 † accepted as  † (original description)
Drepanellina confluens Ulrich & Bassler, 1923 † accepted as  † (original description)
Drepanellina modesta Ulrich & Bassler, 1923 † (original description)
Drepanellina simplex Ulrich & Bassler, 1923 † (original description)
Drepanellina ventralis Ulrich & Bassler, 1923 † (original description)
Eridoconcha Ulrich & Bassler, 1923 † (original description)
Eridoconcha oboloides Ulrich & Bassler, 1923 † accepted as Cryptophyllus oboloides (Ulrich & Bassler, 1923) † (original description)
Eridoconcha rotunda Ulrich & Bassler, 1923 † (original description)
Eridoconcha rugosa Ulrich & Bassler, 1923 † (original description)
Eukloedenella Ulrich & Bassler, 1923 † (original description)
Eukloedenella abrupta Ulrich & Bassler, 1923 † (original description)
Eukloedenella brevis Ulrich & Bassler, 1923 † (original description)
Eukloedenella bulbosa Ulrich & Bassler, 1923 † (original description)