Classification of Siveter et al. 2004
Ph. Arthropoda Gravenhorst 1843 [arthropod]
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Subph. Chelicerata Heymons 1901
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Cl. Pycnogonida Latreille 1810 [sea spider]
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G. †Austrodecus
G. †Palaeoisopus Broili 1928
G. †Palaeopantopus Broili 1929
G. †Palaeothea Bergstrom et al. 1980