Euthycarcinoidea - Euthycarcinida - Kottixerxidae

Parent taxon: Euthycarcinida according to L. I. Anderson and N. H. Trewin 2003

Sister taxon: Euthycarcinidae

Subtaxa: Heterocrania

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Ecology:

Distribution: found only at Windyfield farm, Rhynie (Devonian of the United Kingdom)

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