Classification of Popov et al. 1999

Cl. †Articulata Huxley 1869
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G. †Nikolaespira Nikitin et al. 1996
Or. †Atrypida Rzhonsnitskaya 1960
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G. †Australospira Percival 1991
G. †Eospirigerina Schuchert and Cooper 1930
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†Eospirigerina pennata Rukavishnikova 1956
G. †Protozyga Hall and Clarke 1893
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†Protozyga exigua Hall 1847
G. †Schachriomonia Nikiforova 1978
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†Schachriomonia parva Rukavishnikova 1956
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†Sulcatospira asiatica Misius 1986
†Sulcatospira dominanta Nikitin 1980
†Sulcatospira praecursor Nikitin and Popov 1984
†Sulcatospira prima Popov et al. 1999
G. †Climacograptus Hall 1865
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†Climacograptus clingani Carruthers 1868
Fm. †Meristellidae Waagen 1883
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G. †Kellerella Nikitin et al. 1996
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†Kellerella misiusi Popov et al. 1999
Fm. †Oligorhynchiidae Cooper 1956
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G. †Oligorhyncha Cooper 1956
Subfm. †Spirigerininae Rzhonsnitskaya 1974
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G. †Qilianotryma Xu 1979
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†Qilianotryma suspecta Nikiforova et al. 1982
Fm. †Lissatrypidae Twenhofel 1914
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Invalid names: Cyclospirinae Schuchert 1913 [empty]
Fm. †Protozygidae Copper 1986
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Invalid names: Pectenospirinae Popov et al. 1999 [empty]