Classification of Landing et al. 2002
G. †Coleoloides Walcott 1890
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†Coleoloides prindlei Lochman 1956
†Coleoloides typicalis Walcott 1890
G. †Mackinnonia Bengtson et al. 1990
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†Mackinnonia obliqua Landing and Bartowski 1996
Or. †Orthocerida Kuhn 1940
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Superfm. †Pelagielloidea Knight 1956
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Fm. †Pelagiellidae Knight 1952
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G. †Pelagiella Matthew 1895
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†Pelagiella atlantoides Mathews 1894
†Pelagiella primaeva Billings 1872
Fm. †Yochelcionellidae Runnegar and Jell 1976
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Subor. †Agnostina Salter 1864
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Or. †Pseudoconodontida Landing 1995
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