Classification of Barras 2007

Or. Holasteroida Durham and Melville 1957
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G. †Eoholaster Solovjev 1989
G. †Pseudholaster Pomel 1883
G. †Smithiaster Barras 2007
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†Smithiaster loryi Gras 1852
Fm. †Tithoniidae Solovjev 1966
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G. †Tetraromania Solovjev 1971
G. †Tithonia Pomel 1883
Unr. Atelostomata von Zittel 1879
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G. †Aulacopygus Pomel 1883
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†Aulacopygus caudatus Wright 1852
G. †Hyboclypus Agassiz 1839
G. †Orbigniana Ebray 1860
G. †Pygorhytis Pomel 1883
Fm. †Desorellidae Lambert 1911
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G. †Desorella Cotteau 1855
G. †Menopygus Pomel 1883
Fm. †Galeropygidae Lambert 1911
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Fm. †Toxasteridae Lambert 1920
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G. †Toxaster Agassiz 1839