Classification of Koken 1897

G. †Cyrtolites Conrad 1838
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†Cyrtolites grandis Koken 1897
G. †Clisospira Billings 1865
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†Clisospira ingrica Koken 1897
†Clisospira rugosa Koken 1897
Cl. Gastropoda Cuvier 1795 [snail]
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Subor. †Neritaemorphi Koken 1897
G. †Triblidium Angelin and Lindström 1880
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†Triblidium esthonum Koken 1897
G. †Bucania Hall 1847
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†Bucania cornu Koken 1897
†Bucania crassa Koken 1896
†Bucania crassiuscula Koken 1897
†Bucania czekanowskii Schmidt 1858
†Bucania gracillima Koken 1896
†Bucania latissima Koken 1897
†Bucania oelandica Koken 1896
†Bucania radiata d'Eichwald 1856
†Bucania salpinx Koken 1897
G. †Cymbularia Koken 1896
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†Cymbularia angusta Koken 1897
†Cymbularia galeata Koken 1896
†Cymbularia globulus Lindström 1884
G. †Isospira Koken 1897
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†Isospira bucanioides Koken 1897
G. †Megalomphala Ulrich and Scofield 1897
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G. †Sinuites Koken 1896
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†Sinuites ammonoides Koken 1897
†Sinuites niger Koken 1897
†Sinuites rugulosus Koken 1897
†Sinuites vetustus Koken 1897
G. †Temnodiscus Koken 1896
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†Temnodiscus rugifera Koken 1897
†Temnodiscus secans Koken 1897
†Temnodiscus suecicus Koken 1897
†Temnodiscus tumidus Koken 1896
G. †Cyclonema Hall 1852
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†Cyclonema lineatum Koken 1897
G. †Eccyliopterus Remelé 1888
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†Eccyliopterus elegans Koken 1897
†Eccyliopterus replicatus Angelin and Lindström 1880
G. †Euomphalus Sowerby 1814
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†Euomphalus carinifer Koken 1896
†Euomphalus laminosus Koken 1897
G. †Holopea Hall 1847
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†Holopea ampullacea d'Eichwald 1860
†Holopea eichwaldi Koken 1897
G. †Lesueurilla Koken 1898
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†Lesueurilla helix d'Eichwald 1860
G. †Lytospira Koken 1896
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†Lytospira anguina Koken 1897
†Lytospira evolvens Koken 1897
†Lytospira serpula Koken 1897
†Lytospira valida Koken 1897
G. †Pycnomphalus Lindström 1884
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G. †Raphistoma Hall 1847
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†Raphistoma applanata Koken 1897
†Raphistoma mutans Koken 1897
†Raphistoma obvallatum Wahlenberg 1821
†Raphistoma qualteriatum von Schlotheim 1820
†Raphistoma scalare Koken 1897
†Raphistoma scalitoides Koken 1897
G. †Ectomaria Koken 1896
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†Ectomaria kirnaensis Koken 1897
G. †Eunema Salter 1859
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†Eunema piersalense Koken 1897
†Eunema schmidti Koken 1897
G. †Euryzone Koken 1896
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†Euryzone dalecarlica Koken 1897
G. †Haplospira Koken 1897
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†Haplospira variabilis Koken 1897
G. †Helicotoma Salter 1859
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†Helicotoma gradata Koken 1896
†Helicotoma superba Koken 1897
G. †Murchisonia d'Archiac and de Verneuil 1841
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†Murchisonia insignis d'Eichwald 1860
†Murchisonia meryenorfi Koken 1897
†Murchisonia meyendorfi Koken 1897
G. †Platyceras Conrad 1840
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†Platyceras gracile Koken 1897
G. †Pleurotomaria Defrance 1826
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†Pleurotomaria inflata Koken 1896
†Pleurotomaria lahuseni Koken 1897
†Pleurotomaria maritima Koken 1897
†Pleurotomaria notlingi Koken 1896
G. †Trochonema Salter 1859
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†Trochonema minus Koken 1897
†Trochonema peraltum Koken 1897
G. †Worthenia de Koninck 1883
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†Worthenia aista Koken 1896
†Worthenia initialis Koken 1897
†Worthenia mickwitzi Koken 1896
†Worthenia sodalis Koken 1897
†Worthenia tolli Koken 1897
†Worthenia vermetus Koken 1897
G. †Loxonema Phillips 1841
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†Loxonema kayseri Holzapfel 1895
G. †Subulites Emmons 1842
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†Subulites revalensis Koken 1897
†Subulites stromboides Koken 1897
†Subulites thulensis Koken 1897
G. †Oxydiscus Koken 1889
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†Oxydiscus sphenonotus Koken 1897
G. †Maclurea Le Sueur 1818
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†Maclurea dilatata Koken 1896
†Maclurea exsul Koken 1897
†Maclurea gradata Koken 1897
†Maclurea planorbis Koken 1897
G. †Bucaniella Meek 1871
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†Bucaniella conspicua d'Eichwald 1840
†Bucaniella crispata Koken 1897
†Bucaniella depressa Koken 1897
†Bucaniella divergens Koken 1897
†Bucaniella inflata Koken 1897
†Bucaniella jugata Koken 1896
†Bucaniella lamellosa Koken 1897
†Bucaniella lateralis d'Eichwald 1860
†Bucaniella obtusangula Koken 1897
†Bucaniella revaliensis Koken 1897
†Bucaniella rudicostata Koken 1897
†Bucaniella undata Koken 1897
G. †Gonionema Koken 1896
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†Gonionema angulosum Koken 1897
†Gonionema gradatum Koken 1897
†Gonionema reticulata Koken 1897
Subg. †Subulites (Fusispira) Hall 1872
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