Opinions from F. Rasetti 1944
- 'Acheilus brevis belongs to Acheilus'
- 'Acheilus communis belongs to Acheilus'
- 'Acheilus depressus belongs to Acheilus'
- 'Acheilus gibbus belongs to Acheilus'
- 'Acheilus latus belongs to Acheilus'
- 'Acheilus levisensis belongs to Acheilus' according to Clark 1924
- 'Acheilus limbatus belongs to Acheilus'
- 'Agnostus canadensis belongs to Agnostus' according to Billings 1860
- 'Agnostus canadensis is recombined as Pseudagnostus canadensis'
- 'Agnostus gladiator belongs to Agnostus' according to Clark 1923
- 'Agnostus innocens belongs to Agnostus' according to Clark 1923
- 'Agnostus janei belongs to Agnostus' according to Clark 1923
- 'Agnostus janei is a subjective synonym of Pseudagnostus canadensis'
- 'Agnostus orion belongs to Agnostus' according to Billings 1860
- 'Ambonolium affine belongs to Ambonolium'
- 'Aposolenopleura brevifrons belongs to Aposolenopleura'
- 'Aposolenopleura carinata belongs to Aposolenopleura'
- 'Aposolenopleura dunbari belongs to Aposolenopleura' according to Raymond 1937
- 'Aposolenopleura platyfrons belongs to Aposolenopleura'
- 'Arionellus cylindricus belongs to Arionellus' according to Billings 1860
- 'Arionellus cylindricus is recombined as Agraulos cylindricus' according to Miller 1889
- 'Arionellus cylindricus is recombined as Keithiella cylindrica'
- 'Arionellus subclavatus belongs to Arionellus' according to Billings 1860
- 'Arionellus subclavatus is recombined as Keithia subclavatus' according to Raymond 1924
- 'Bathyurus armatus belongs to Bathyurus' according to Billings 1860
- 'Bathyurus armatus is recombined as Plethometopus armatus' according to Ulrich 1930
- 'Bathyurus armatus is recombined as Plethometopus armatus'
- 'Bathyurus capax belongs to Bathyurus' according to Billings 1860
- 'Bathyurus capax is recombined as Platycolpus capax'
- 'Bathyurus dubius belongs to Bathyurus' according to Billings 1860
- 'Bathyurus dubius is recombined as Platycolpus dubius'
- 'Bayfieldia tumifrons belongs to Bayfieldia' according to Clark 1924
- 'Calymenidius tuberculatus belongs to Calymenidius'
- 'Conocephalites zenkeri belongs to Conocephalites' according to Billings 1860
- 'Conocephalites zenkeri is recombined as Loganopeltis zenkeri' according to Rasetti 1943
- 'Denisia eminens belongs to Denisia' according to Clark 1924
- 'Denisia pusilla belongs to Denisia' according to Clark 1924
- 'Dikelocephalus affinis belongs to Dikelocephalus' according to Billings 1865
- 'Dikelocephalus affinis is recombined as Platycolpus affinis' according to Walcott 1914
- 'Dikelocephalus affinis is recombined as Levisella affinis' according to Ulrich 1930
- 'Dikelocephalus belli is recombined as Anomocarella belli' according to Walcott 1914
- 'Dikelocephalus belli is recombined as Loganellus belli'
- 'Dikelocephalus belli belongs to Dikelocephalus' according to Billings 1860
- 'Dikelocephalus corax belongs to Dikelocephalus' according to Billings 1865
- 'Dikelocephalus corax is recombined as Bienvillia corax' according to Clark 1924
- 'Dikelocephalus cristatus is recombined as Richardsonella cristata'
- 'Dikelocephalus cristatus is recombined as Conokephalina cristata' according to Walcott 1914
- 'Dikelocephalus devinei belongs to Dikelocephalus' according to Billings 1865
- 'Dikelocephalus devinei is recombined as Conocephalites devinei' according to Matthew 1893
- 'Dikelocephalus devinei is recombined as Ptychoparia devinei' according to Walcott 1914
- 'Dikelocephalus devinei is recombined as Briscoia devinei'
- 'Dikelocephalus hisingeri belongs to Dikelocephalus' according to Bilings 1865
- 'Dikelocephalus hisingeri is recombined as Conocephalites hisingeri' according to Matthew 1893
- 'Dikelocephalus hisingeri is recombined as Lisania hisingeri' according to Walcott 1914
- 'Dikelocephalus hisingeri is recombined as Pseudolisania hisingeri'
- 'Dikelocephalus magnificus belongs to Dikelocephalus' according to Billings 1860
- 'Dikelocephalus magnificus is recombined as Apatokephalus magnificus' according to Broegger 1897
- 'Dikelocephalus magnificus is recombined as Hungaia magnifica' according to Walcott 1914
- 'Dikelocephalus megalops is recombined as Conokephalina megalops' according to Walcott 1914
- 'Dikelocephalus megalops is recombined as Richardsonella megalops'
- 'Dikelocephalus pauper belongs to Dikelocephalus' according to Billings 1865
- 'Dikelocephalus pauper is recombined as Apatokephaloides pauper'
- 'Dikelocephalus planifrons belongs to Dikelocephalus' according to Billings 1860
- 'Dikelocephalus planifrons is recombined as Anomocarella planifrons' according to Walcott 1914
- 'Dikelocephalus planifrons is recombined as Lauzonella planifrons'
- 'Dikelocephalus selectus belongs to Dikelocephalus' according to Billings 1865
- 'Dikelocephalus selectus is recombined as Ptychaspis selectus' according to Walcott 1914
- 'Dikelocephalus selectus is recombined as Saukiella selectus'
- 'Dikelocephalus sesostris belongs to Dikelocephalus' according to Billings 1865
- 'Dikelocephalus sesostris is recombined as Pseudosaukia sesostris'
- 'Dikelokephalina broeggeri belongs to Dikelokephalina' according to Clark 1924
- 'Dikelokephalina broeggeri is recombined as Lauzonella broeggeri'
- 'Heterocaryon tuberculatum belongs to Heterocaryon'
- 'Keithia similis belongs to Keithia'
- 'Keithiella brevis belongs to Keithiella'
- 'Keithiella depressa belongs to Keithiella'
- 'Lecanopyge angustata belongs to Lecanopyge'
- 'Lecanopyge arenaria belongs to Lecanopyge'
- 'Lecanopyge expansa belongs to Lecanopyge' according to Raymond 1937
- 'Lecanopyge intermedia belongs to Lecanopyge'
- 'Lecanopyge prolifica belongs to Lecanopyge'
- 'Leiocoryphe gemma belongs to Leiocoryphe' according to Clark 1924
- 'Leiocoryphe occipitalis belongs to Leiocoryphe'
- 'Levisella brevifrons belongs to Levisella'
- 'Levisia nasuta belongs to Levisia' according to Walcott 1911
- 'Levisia richardsoni belongs to Levisia' according to Walcott 1911
- 'Litagnostus levisensis belongs to Litagnostus'
- 'Loganellus billingsi belongs to Loganellus' according to Clark 1924
- 'Loganellus billingsi is recombined as Lecanopyge billingsi'
- 'Loganellus macropleurus belongs to Loganellus'
- 'Loganellus similis belongs to Loganellus'
- 'Loganopeltis minuta belongs to Loganopeltis'
- 'Menocephalus globosus belongs to Menocephalus' according to Billings 1860
- 'Menocephalus sedgwicki belongs to Menocephalus' according to Billings 1860
- 'Olenus logani belongs to Olenus' according to Devine 1863
- 'Olenus logani is recombined as Ptychoparia logani' according to Walcott 1884
- 'Onchonotus granulatus belongs to Onchonotus'
- 'Onchopeltis spectabilis belongs to Onchopeltis'
- 'Osceolia brevifrons belongs to Osceolia' according to Clark 1924
- 'Osceolia brevifrons is recombined as Pseudosaukia brevifrons'
- 'Platycolpus depressus belongs to Platycolpus'
- 'Platycolpus marcoui belongs to Platycolpus' according to Clark 1924
- 'Platydiamesus levisensis belongs to Platydiamesus'
- 'Plethagnostus gyps is recombined as Pseudagnostus gyps'
- 'Plethagnostus gyps belongs to Plethagnostus' according to Clark 1923
- 'Plethometopus acutus belongs to Plethometopus'
- 'Plethometopus laticeps belongs to Plethometopus'
- 'Plethopeltis angusta is recombined as Plethometopus angustus'
- 'Plethopeltis angusta belongs to Plethopeltis' according to Raymond 1924
- 'Plethopeltis angusta is recombined as Plethometopus angustus' according to Ulrich 1930
- 'Plethopeltis convergens belongs to Plethopeltis' according to Raymond 1924
- 'Plethopeltis convergens is recombined as Plethometopus convergens' according to Ulrich 1930
- 'Plethopeltis convergens is recombined as Plethometopus convergens'
- 'Quebecaspis breviceps belongs to Quebecaspis'
- 'Raymondina respecta belongs to Raymondina' according to Clark 1924
- 'Richardsonella convexa belongs to Richardsonella'
- 'Richardsonella elongata belongs to Richardsonella'
- 'Richardsonella unisulcata belongs to Richardsonella'
- 'Solenopleura laflammei belongs to Solenopleura' according to Clark 1924
- 'Solenopleura laflammei is recombined as Glyptometopus laflammei'
- 'Solenopleura trunca belongs to Solenopleura' according to Clark 1924
- 'Solenopleura trunca is recombined as Tostonia trunca' according to Raymond 1937
- 'Solenopleura trunca is a subjective synonym of Loganellus belli'
- 'Stenopilus brevis belongs to Stenopilus' according to Raymond 1924
- 'Stenopilus brevis is recombined as Leiocoryphe brevis'
- 'Stenopilus elongatus belongs to Stenopilus'
- 'Stenopilus intermedius belongs to Stenopilus' according to Clark 1924
- 'Stenopilus pronus belongs to Stenopilus' according to Raymond 1924
- 'Stigmametopus levisensis belongs to Stigmametopus'
- 'Talbotina levisensis belongs to Talbotina'
- 'Tatonaspis levisensis belongs to Tatonaspis'
- 'Tostonia duplicata belongs to Tostonia' according to Raymond 1937
- 'Tostonia duplicata is recombined as Loganellus duplicata'
- 'Tostonia unisulcata belongs to Tostonia' according to Raymond 1937
- 'Tostonia unisulcata is recombined as Loganellus unisulcata'
- 'Zacompsus levisensis belongs to Zacompsus'