Taxonomic names from E. Billings 1865
- Archinacella instabilis incurva, E. Billings 1865 [unclassified subspecies]
- Avicula hermione, E. Billings 1865 [Myodakryotidae]
- Bathyurellus marginiatus, E. Billings 1865 [Bathyuridae]
- Bellerophon macer, E. Billings 1865 [Tropidodiscidae]
- Bellerophon miser, E. Billings 1865 [Bellerophontidae]
- Bellerophon palinurus, E. Billings 1865 [Tropidodiscidae]
- Calathium paradoxicum, E. Billings 1865 [Haplistiidae]
- Cheirurus satyrus, E. Billings 1865 [Cheiruridae]
- Chiton canadensis, E. Billings 1865 [Polyplacophora]
- Clisospira, E. Billings 1865 [Clisospiridae]
- Clisospira curiosa, E. Billings 1865 [Clisospiridae]
- Conocardium immatura, E. Billings 1865 [Conocardiidae]
- Ctenodonta abrupta, E. Billings 1865 [Ctenodontidae]
- Cyclonema hageri, E. Billings 1865 [Platyceratidae]
- Cyclonema montrealense, E. Billings 1865 [Platyceratidae]
- Cyclonema phaedra, E. Billings 1865 [Eotomariidae]
- Cyrtoceras syphax, E. Billings 1865 [Ellesmeroceratidae]
- Ecculiomphalus atlanticus, E. Billings 1865 [Raphistomatidae]
- Ecculiomphalus distans, E. Billings 1865 [Ophiletidae]
- Eopteria, E. Billings 1865 [Eopteriidae]
- Eopteria ornata, E. Billings 1865 [Eopteriidae]
- Eopteria richardsoni, E. Billings 1865 [Eopteriidae]
- Eopteria typica, E. Billings 1865 [Eopteriidae]
- Euchasma, E. Billings 1865 [Eopteriidae]
- Eunema erigone, E. Billings 1865 [Lophospiridae]
- Harpes ottawaensis (E. Billings 1865) [Harpetidae]
- Helicotoma eucharis, E. Billings 1865 [Raphistomatidae]
- Helicotoma gorgonea, E. Billings 1865 [Helicotomidae]
- Helicotoma miser, E. Billings 1865 [Helicotomidae]
- Helicotoma proserpina, E. Billings 1865 [Helicotomidae]
- Helicotoma tritonia, E. Billings 1865 [Helicotomidae]
- Holopea gracia, E. Billings 1865 [Holopeidae]
- Holopea guelphensis, E. Billings 1865 [Holopeidae]
- Holopea harmonia, E. Billings 1865 [Elasmonematidae]
- Holopea lavinia, E. Billings 1865 [Holopeidae]
- Holopea lavinia conica, E. Billings 1865 [Holopeidae]
- Holopea nereis, E. Billings 1865 [Holopeidae]
- Holopea ophelia, E. Billings 1865 [Straparollinidae]
- Holopea pyrene, E. Billings 1865 [Holopeidae]
- Lecanospira nereine (E. Billings 1865) [Ophiletidae]
- Lingula briseis, E. Billings 1865 [Obolidae]
- Lingula cobourgensis, E. Billings 1865 [Lingulasmatidae]
- Lingula nympha, E. Billings 1865 [Obolidae]
- Litoceras calciferum (E. Billings 1865) [Trocholitidae]
- Lituites pluto, E. Billings 1865 [Ruedemannoceratidae]
- Maclurea acuminata, E. Billings 1865 [Macluritidae]
- Maclurea affinis, E. Billings 1865 [Macluritidae]
- Maclurea crenulata, E. Billings 1865 [Macluritidae]
- Maclurea emmonsi, E. Billings 1865 [Macluritidae]
- Maclurea oceana, E. Billings 1865 [Macluritidae]
- Maclurea ponderosa, E. Billings 1865 [Macluritidae]
- Maclurea rotundata, E. Billings 1865 [Macluritidae]
- Maclurea speciosa, E. Billings 1865 [Ophiletidae]
- Maclurea sylpha, E. Billings 1865 [Macluritidae]
- Maclurea transitionis, E. Billings 1865 [Ophiletidae]
- Metoptoma alceste, E. Billings 1865 [Metoptomatidae]
- Metoptoma anomala, E. Billings 1865 [Scenellidae]
- Metoptoma augusta, E. Billings 1865 [Scenellidae]
- Metoptoma erato, E. Billings 1865 [Tryblidiidae]
- Metoptoma estella, E. Billings 1865 [Archinacellidae]
- Metoptoma eubule, E. Billings 1865 [Tryblidiidae]
- Metoptoma hyrie, E. Billings 1865 [Tryblidiidae]
- Metoptoma instabilis, E. Billings 1865 [Archinacellidae]
- Metoptoma melissa, E. Billings 1865 [Archinacellidae]
- Metoptoma montrealensis, E. Billings 1865 [Scenellidae]
- Metoptoma niobe, E. Billings 1865 [Tryblidiidae]
- Metoptoma nycteis, E. Billings 1865 [Tryblidiidae]
- Metoptoma orithyia, E. Billings 1865 [Scenellidae]
- Metoptoma orphyne, E. Billings 1865 [Archinacellidae]
- Metoptoma quebecensis, E. Billings 1865 [Archinacellidae]
- Metoptoma robusta, E. Billings 1865 [Metoptomatidae]
- Metoptoma simplex, E. Billings 1865 [Archinacellidae]
- Metoptoma superba, E. Billings 1865 [Archaeophialidae]
- Metoptoma trentonensis, E. Billings 1865 [Archinacellidae]
- Metoptoma venillia, E. Billings 1865 [Scenellidae]
- Murchisonia acrea, E. Billings 1865 [Eotomariidae]
- Murchisonia ada, E. Billings 1865 [Eotomariidae]
- Murchisonia adelina, E. Billings 1865 [Lophospiridae]
- Murchisonia agilis, E. Billings 1865 [Hormotomidae]
- Murchisonia alexandra, E. Billings 1865 [Loxonematidae]
- Murchisonia artemesia, E. Billings 1865 [Hormotomidae]
- Murchisonia augustina, E. Billings 1865 [Subulitidae]
- Murchisonia cassandra, E. Billings 1865 [Hormotomidae]
- Murchisonia catharina, E. Billings 1865 [Lophospiridae]
- Murchisonia cicela, E. Billings 1865 [Murchisoniidae]
- Murchisonia cicelia, E. Billings 1865 [Lophospiridae]
- Murchisonia estella, E. Billings 1865 [Hormotomidae]
- Murchisonia hercynia, E. Billings 1865 [Pseudophoridae]
- Murchisonia hermione, E. Billings 1865 [Lophospiridae]
- Murchisonia hyale, E. Billings 1865 [Hormotomidae]
- Murchisonia missisquoi, E. Billings 1865 [Lophospiridae]
- Murchisonia mylitta, E. Billings 1865 [Murchisoniidae]
- Murchisonia placida, E. Billings 1865 [Murchisoniidae]
- Murchisonia procris, E. Billings 1865 [Straparollinidae]
- Murchisonia simulatrix, E. Billings 1865 [Subulitidae]
- Murchisonia sororcula, E. Billings 1865 [Lophospiridae]
- Murchisonia vesta, E. Billings 1865 [Hormotomidae]
- Murchisonia vitellia, E. Billings 1865 [Plethospiridae]
- Murchisonia xanthippe, E. Billings 1865 [Murchisoniidae]
- Nautilus calciferus, E. Billings 1865 [Nautilidae]
- Nieszkowskia satyrus (E. Billings 1865) [Cheiruridae]
- Obolella desiderata, E. Billings 1865 [Elkaniidae]
- Ophileta bella, E. Billings 1865 [Ophiletidae]
- Ophileta disjuncta, E. Billings 1865 [Raphistomatidae]
- Ophileta nereine, E. Billings 1865 [unclassified species]
- Orthis gemmicula, E. Billings 1865 [Orthidiellidae]
- Orthis iphigenia, E. Billings 1865 [Plaesiomyidae]
- Paraharpes ottawaensis, E. Billings 1865 [Harpetidae]
- Petraster bellulus, E. Billings 1865 [Mesopalaeasteridae]
- Pleurotomaria agarista, E. Billings 1865 [Pleurotomariidae]
- Pleurotomaria agave, E. Billings 1865 [Holopeidae]
- Pleurotomaria amphitrite, E. Billings 1865 [Sinuopeidae]
- Pleurotomaria arabella, E. Billings 1865 [Raphistomatidae]
- Pleurotomaria arachne, E. Billings 1865 [Trochonematidae]
- Pleurotomaria calphurnia, E. Billings 1865 [Helicotomidae]
- Pleurotomaria canadensis, E. Billings 1865 [Raphistomatidae]
- Pleurotomaria deiopei, E. Billings 1865 [Luciellidae]
- Pleurotomaria dryope, E. Billings 1865 [Eotomariidae]
- Pleurotomaria elora, E. Billings 1865 [Euomphalidae]
- Pleurotomaria etna, E. Billings 1865 [Sinuopeidae]
- Pleurotomaria eugenia, E. Billings 1865 [Eotomariidae]
- Pleurotomaria galtensis, E. Billings 1865 [Gosseletinidae]
- Pleurotomaria harpya, E. Billings 1865 [Raphistomatidae]
- Pleurotomaria hortensia, E. Billings 1865 [Holopeidae]
- Pleurotomaria hyale, E. Billings 1865 [Pleurotomariidae]
- Pleurotomaria normani, E. Billings 1865 [Raphistomatidae]
- Pleurotomaria numeria, E. Billings 1865 [Raphistomatidae]
- Pleurotomaria postumia, E. Billings 1865 [Pleurotomariidae]
- Pleurotomaria selecta, E. Billings 1865 [Lophospiridae]
- Pleurotomaria sponsa, E. Billings 1865 [Eotomariidae]
- Pleurotomaria vagrans, E. Billings 1865 [Raphistomatidae]
- Pleurotomaria valeria, E. Billings 1865 [Euomphalidae]
- Pleurotomaria viola, E. Billings 1865 [Gastropoda]
- Pleurotomaria virgo, E. Billings 1865 [Pleurotomariidae]
- Pleurotomaria virguncula, E. Billings 1865 [Eotomariidae]
- Pleurotomaria vitruvia, E. Billings 1865 [Eotomariidae]
- Remopleurides canadensis, E. Billings 1865 [Remopleurididae]
- Ribeiria calcifera, E. Billings 1865 [Technophoridae]
- Ribeiria longiscula, E. Billings 1865 [Ribeiriidae]
- Ribeirina, E. Billings 1865 [Ribeiriidae]
- Stenaster huxleyi, E. Billings 1865 [Urasterellidae]
- Straparollina, E. Billings 1865 [Straparollinidae]
- Straparollina pelagica, E. Billings 1865 [Straparollinidae]
- Straparollus daphne, E. Billings 1865 [Euomphalidae]
- Straparollus hippolyta, E. Billings 1865 [Euomphalidae]
- Straparollus quebecensis, E. Billings 1865 [Ophiletidae]
- Subulites daphne, E. Billings 1865 [Subulitidae]
- Subulites parvulus, E. Billings 1865 [Subulitidae]
- Subulites psyche, E. Billings 1865 [Subulitidae]
- Trematis huronensis, E. Billings 1865 [Trematidae]