Classification of the family Thecideidae

Fm. Thecideidae Gray 1840
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Subfm. †Ancorellininae Baker and Mancenido 1997
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Subfm. Lacazellinae Backhaus 1959
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G. Lacazella Munier-Chalmas 1881
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Subg. †Lacazella (Bifolium) Elliott 1948
†Lacazella nana Cooper 1988
†Lacazella novazelandiae Hiller 2011
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†Neothecidella ulmensis Quenstedt 1858
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†Praelacazella wetherelli Morris 1851
G. †Thecidanella Ceccolini and Cianferoni 2023
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†Thecidanella fragilis Pajaud 1966
Invalid names: Danella [replaced]
G. †Thecidella Thomson 1915
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†Thecidella gerassimovi Makridin 1964
G. †Protolacazella Baker 2005
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†Protolacazella scripta Baker 2005
Subfm. †Thecideinae Gray 1840
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G. †Eudesella
G. †Mimikonstantia Baker and Elston 1984
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†Mimikonstantia sculpta Baker and Elston 1984
G. †Thecidea Defrance 1822
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†Thecidea essensis Roemer 1840
†Thecidea moorei Davidson 1851
†Thecidea papillata von Schlotheim 1813
†Thecidea rhaetica Zugmayer 1882
†Thecidea rothpletzi Böhm 1891
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†Thecidiopsis tetragona Roemer 1839