Classification of Wright 1963

G. †Rowellella Wright 1963
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†Rowellella minuta Wright 1963
Superfm. †Acrotretacea Schuchert 1893
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Fm. †Acrotretidae Schuchert 1893
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Subfm. †Acrotretinae Schuchert 1893
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G. †Ephippelasma Cooper 1956
G. †Spondylotreta Cooper 1956
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†Spondylotreta parva Wright 1963
Invalid names: Acrotetidae Schuchert [empty]
Superfm. †Craniacea Menke 1828
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Fm. †Craniidae Menke 1828
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G. †Acanthocrania Williams 1943
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†Acanthocrania cracentis Wright 1963
G. †Eoconulus Cooper 1956
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†Eoconulus transversus Wright 1963
G. †Philhedrella Kozlowski 1929
Superfm. †Discinacea Gray 1840
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Fm. †Disciniidae Gray 1840
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Invalid names: Orbiculoideinae Schuchert 1929 [empty]
Fm. †Trematidae Schuchert 1893
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G. †Trematis Sharpe 1848
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†Trematis huronensis Billings 1865
Superfm. †Obolacea Schuchert 1896
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Fm. †Obolidae King 1846
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Subfm. †Glossellinae Cooper 1956
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G. †Leptobolus Hall 1871
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†Leptobolus rarus Wright 1963
Subfm. †Lingulellinae Schuchert 1893
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G. †Lingulella Salter 1866
Invalid names: Acanthamboniinae Cooper 1956 [empty]
Superfm. †Trimerellacea Davidson and King 1872
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Fm. †Paterulidae Cooper 1956
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G. †Paterula Barrande 1879
Superfm. †Siphonotretacea Kutorga 1948
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Fm. †Siphonotretidae Kutorga 1848
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G. †Multispinula Rowell 1962