Avicula hermione Billings, 1862 † accepted as Myodakryotus hermione (Billings, 1862) † (original description)
Clisospira Billings, 1865 † (original description)
Clisospira curiosa Billings, 1865 † (original description)
Ctenodonta iphigenia Billings, 1865 † (original description)
Cyclonema hageri Billings, 1862 † (original description)
Cyclonema montrealensis Billings, 1862 † (original description)
Cyrtoceras alethes Billings, 1865 † accepted as Bassleroceras alethes (Billings, 1865) † (original description)
Cyrtoceras dictys Billings, 1865 † accepted as Dyscritoceras dictys (Billings, 1865) † (original description)
Cyrtoceras metellus Billings, 1865 † accepted as Dyscritoceras metellus (Billings, 1865) † (original description)
Cyrtocerina Billings, 1865 † (original description)
Cyrtocerina mercurius Billings, 1865 † accepted as Levisoceras mercurius (Billings, 1865) † (original description)
Cyrtocerina typica Billings, 1865 † (original description)
Cyrtodonta emma Billings, 1862 † (original description)
Cyrtodonta harrietta Billings, 1862 † (original description)
Cyrtodonta hindi Billings, 1862 † (original description)
Cyrtodonta ponderosa Billings, 1862 † (original description)
Eopteria Billings, 1865 † (original description)
Eopteria typica Billings, 1865 † (original description)
Euchasma Billings, 1865 † (original description)
Eunema erigone Billings, 1862 † (original description)
Holopea gracia Billings, 1862 † (original description)
Holopea guelphensis Billings, 1862 † (original description)
Holopea harmonia Billings, 1862 † (original description)
Holopea nereis Billings, 1862 † (original description)
Holopea proserpina Billings, 1862 † (original description)
Holopea pyrene Billings, 1862 † (original description)
Metoptoma alceste Billings, 1865 † (original description)
Metoptoma erato Billings, 1865 † accepted as Tryblidium erato (Billings, 1865) † (original description)
Metoptoma estella Billings, 1865 † accepted as Archinacella estella (Billings, 1865) † (original description)
Metoptoma eubule Billings, 1865 † accepted as Tryblidium eubule (Billings, 1865) † (original description)
Metoptoma hyrie Billings, 1865 † accepted as Tryblidium hyrie (Billings, 1865) † (original description)
Metoptoma instabilis Billings, 1865 † accepted as Archinacella instabilis (Billings, 1865) † (original description)
Metoptoma melissa Billings, 1865 † accepted as Archinacella melissa (Billings, 1865) † (original description)
Metoptoma niobe Billings, 1862 † accepted as Tryblidium niobe (Billings, 1862) † (original description)
Metoptoma nycteis Billings, 1862 † accepted as Tryblidium nycteis (Billings, 1862) † (original description)
Metoptoma orphyne Billings, 1865 † accepted as Floripatella orphyne (Billings, 1865) † (original description)
Metoptoma quebecensis Billings, 1865 † accepted as Floripatella quebecensis (Billings, 1865) † (original description)
Metoptoma robusta Billings, 1865 † (original description)
Metoptoma simplex Billings, 1865 † accepted as Archinacella simplex (Billings, 1865) † (original description)
Metoptoma trentonensis Billings, 1865 † accepted as Archinacella trentonensis (Billings, 1865) † (original description)
Murchisonia estella Billings, 1862 † (original description)
Murchisonia hercyna Billings, 1862 † (original description)
Murchisonia hermione Billings, 1862 † (original description)
Murchisonia hyale Billings, 1862 † (original description)
Murchisonia mylitta Billings, 1862 † (original description)
Murchisonia procris Billings, 1862 † (original description)
Murchisonia vesta Billings, 1862 † (original description)
Murchisonia vitellia Billings, 1862 † (original description)
Murchisonia xanthippe Billings, 1862 † (original description)
Nautilus popmonius Billings, 1862 † (original description)
Orthoceras atticus Billings, 1865 † accepted as Oxfordoceras atticus (Billings, 1865) † (original description)
Orthoceras cataline Billings, 1865 † accepted as Ectocycloceras cataline (Billings, 1865) † (original description)
Orthoceras explorator Billings, 1865 † accepted as Cyptendocerina explorator (Billings, 1865) † (original description)
Orthoceras menelaus Billings, 1862 † (original description)
Orthoceras perparvum Billings, 1862 † (original description)
Orthoceras perseus Billings, 1865 † accepted as Bassleroceras perseus (Billings, 1865) † (original description)
Orthoceras repens Billings, 1865 † accepted as Protocycloceras repens (Billings, 1865) † (original description)
Orthoceras sayi Billings, 1865 † accepted as Pachendoceras sayi (Billings, 1865) † (original description)
Orthoceras veterator Billings, 1865 † accepted as Cyptendoceras veterator (Billings, 1865) † (original description)
Orthoceras xerxes Billings, 1865 † accepted as Protocycloceras xerxes (Billings, 1865) † (original description)
Pleurotomaria amphitrite Billings, 1862 † (original description)
Pleurotomaria arachne Billings, 1862 † (original description)
Pleurotomaria deiopeia Billings, 1862 † (original description)
Pleurotomaria elora Billings, 1862 † accepted as Spinicharybdis elora (Billings, 1862) † (original description)
Pleurotomaria etna Billings, 1865 † accepted as Euconia etna (Billings, 1865) † (original description)
Pleurotomaria eugenia Billings, 1862 † (original description)
Pleurotomaria galtensis Billings, 1862 † (original description)
Straparollus daphne Billings, 1862 † (original description)
Straparollus hippolyita Billings, 1862 † (original description)
Subulites parvulus Billings, 1862 † (original description)

Canada for Cyclonema hageri Billings, 1862 † 
Canada for Holopea proserpina Billings, 1862 † 
Canada for Holopea pyrene Billings, 1862 † 
Canada for Nautilus popmonius Billings, 1862 † 
Canada for Orthoceras menelaus Billings, 1862 † 
Canada for Orthoceras perparvum Billings, 1862 † 
Canada for Pleurotomaria amphitrite Billings, 1862 † 
Canada for Pleurotomaria arachne Billings, 1862 † 
Canada for Pleurotomaria eugenia Billings, 1862 † 
Newfoundland for Eopteria typica Billings, 1865 † 
Newfoundland for Pleurotomaria etna Billings, 1865 † 
Ontario for Cyrtodonta hindi Billings, 1862 † 
Ontario for Holopea gracia Billings, 1862 † 
Ontario for Holopea guelphensis Billings, 1862 † 
Ontario for Holopea harmonia Billings, 1862 † 
Ontario for Murchisonia estella Billings, 1862 † 
Ontario for Murchisonia hercyna Billings, 1862 † 
Ontario for Murchisonia mylitta Billings, 1862 † 
Ontario for Murchisonia vitellia Billings, 1862 † 
Ontario for Murchisonia xanthippe Billings, 1862 † 
Ontario for Pleurotomaria deiopeia Billings, 1862 † 
Ontario for Pleurotomaria elora Billings, 1862 † 
Ontario for Pleurotomaria galtensis Billings, 1862 † 
Ontario for Straparollus daphne Billings, 1862 † 
Ontario for Straparollus hippolyita Billings, 1862 † 
Quebec for Clisospira curiosa Billings, 1865 † 
Quebec for Cyclonema montrealensis Billings, 1862 † 
Québec for Avicula hermione Billings, 1862 † 
Québec for Cyrtodonta emma Billings, 1862 † 
Québec for Cyrtodonta harrietta Billings, 1862 † 
Québec for Metoptoma alceste Billings, 1865 † 
Québec for Metoptoma estella Billings, 1865 †