Classification of Billings 1866

G. †Conularia
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Conularia splendida Billings 1866
G. †Halysites von Waldheim 1813
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Halysites catenularia Linnaeus 1767
G. †Cyrtolites Conrad 1838
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Cyrtolites desiderata Billings 1866
Cyrtolites pannosus Billings 1866
G. †Ischyrinia Billings 1866
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Ischyrinia plicata Billings 1866
Ischyrinia winchelli Billings 1866
G. †Conocardium Bronn 1835
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Conocardium elegantulum Billings 1866
G. †Bellerophon de Montfort 1808
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Bellerophon bilobatus de Sowerby and Murchison 1839
Bellerophon canadensis Billings 1866
Bellerophon fraternus Billings 1866
Bellerophon solitarius Billings 1866
G. †Cyclonema Hall 1852
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Cyclonema bellula Billings 1866
Cyclonema communis Billings 1866
Cyclonema decora Billings 1866
Cyclonema humilis Billings 1866
Cyclonema mediocris Billings 1866
Cyclonema percingulatum Billings 1857
Cyclonema thalia Billings 1857
G. †Murchisonia d'Archiac and de Verneuil 1841
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Murchisonia funata Billings 1866
Murchisonia modesta Billings 1857
Murchisonia multivolvis Billings 1857
Murchisonia papillosa Billings 1857
Murchisonia rugosum Billings 1857
Murchisonia teretiformis Billings 1857
Murchisonia turricula Billings 1857
Murchisonia varians Billings 1857
G. †Pleurotomaria Defrance 1826
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Pleurotomaria circe Billings 1857
Pleurotomaria cryptata Billings 1866
Pleurotomaria sybellina Billings 1866
G. †Loxonema Phillips 1841
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Loxonema aculeata Billings 1866
G. †Subulites Emmons 1842
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Subulites notatus Billings 1866
Subulites richardsoni Billings 1857
G. †Orthoceras Breynius 1832
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Orthoceras anticostiense Billings 1857
Orthoceras bellatulum Billings 1866
Orthoceras infelix Billings 1866
Orthoceras raptor Billings 1866
G. †Cyrtodonta Billings 1858
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Cyrtodonta emma Billings 1862
Cyrtodonta plebia Billings 1866
G. †Cheirurus Beyrich 1845
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Cheirurus numator Billings 1866
G. †Ptilodictya Lonsdale 1839
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Ptilodictya canadensis Billings 1866
Ptilodictya nitidula Billings 1866
G. †Orthis Dalman 1828
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Orthis sola Billings 1866
Orthis uberis Billings 1866
G. †Camerella Billings 1859
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Camerella reversa Billings 1857
G. †Rhynchonella Fischer 1809
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Rhynchonella janea Billings 1866
Rhynchonella vicina Billings 1866
Orthoceras fulgar Billings 1866
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Invalid names: Orthoceras propinquum Billings 1857 [replaced]