Classification of Smirnova 1975
G. †Lacunosella Wisniewska 1932
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†Lacunosella lacunosa Schlotheim 1813
†Lacunosella pachytheca Zeuschner 1855
G. †Galliennithyris
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†Galliennithyris insignis Zeuschner 1857
†Galliennithyris simplicissima Zeuschner 1857
G. †Tropeothyris Smirnova 1972
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†Tropeothyris bieskidensis Zeuschner 1857
†Tropeothyris carpathica Zittel 1870
†Tropeothyris cyclogonia Zeuschner 1857
†Tropeothyris immanis Zeuschner 1857
†Tropeothyris isomorpha Gemmellaro 1871
†Tropeothyris testatus Smirnova 1975
†Tropeothyris tychoviensis Suess 1858
Fm. Dallinidae Beecher 1893
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