†order Astrapidiformes Berg 1940 (jawless fish)

Pteraspidomorpha - Astrapidiformes

Parent taxon: Astraspida according to I. J. Sansom et al. 1997

See also Long 2011, Nelson et al. 2016, Sepkoski 2002, Van Der Laan 2019 and Wilson et al. 2016

Sister taxon: Astraspidiformes

Subtaxa: Astraspididae

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Ecology:

Distribution:

• Ordovician of Canada (11: Ontario collections), United States (4: Colorado, Wyoming)

Total: 15 collections including 16 occurrences

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