Classification of the order Spinulosa
Unr. Spinulosida Perrier 1884
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Unr. Chevronida Gale 2018
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Fm. Tremasteridae Sladen 1889
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G. †Mesotremaster Hess 1972
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†Mesotremaster felli Hess 1972
†Mesotremaster mazetieri Mercier 1935
†Mesotremaster zbindeni Hess 1981
Unr. Velatida Perrier 1893
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Unr. Pterasteridae Perrier 1875
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G. Pteraster Müller and Troschel 1842
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†Pteraster angulatus Gale 2022
†Pteraster balticus Gale 2022
†Pteraster cretachiton Gale 2022
†Pteraster kutscheri Gale 2022
†Pteraster lyddenensis Gale 2023
†Pteraster nudus Gale 2022
†Pteraster paucispinus Gale 2022
†Pteraster seafordensis Gale 2022
†Pteraster turoniense Gale 2022
G. †Savignaster Gale 2011
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†Savignaster septemtrionalis Rousseau et al. 2018
†Savignaster wardi Gale 2011
Fm. †Tropidasteridae Wright 1880
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Invalid names: Caymanostellidae Belyaev 1974 [empty], Myxasteridae Perrier 1891 [empty]
Fm. Echinasteridae Verrill 1870
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G. Echinaster Müller and Troschel 1840
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†Echinaster jacobseni Rasmussen 1972
Invalid names: Rhopia Gray 1840 [objective synonym]
Subor. †Eugnathina Spencer and Wright 1966
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Fm. †Plesiosolasteridae Hess 1972
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G. †Plesiosolaster Hess 1972
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†Plesiosolaster moretonis Forbes 1856
Invalid names: Brachisolaster Blake 1993 [objective synonym]
Invalid names: Arkonasteridae Kesling 1982 [empty]
Invalid names: Plumasteridae Gale 2011 [empty]