ammonites
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Emeraldella Walcott 1912 (trilobite-like)

PaleoDB taxon number: 19029

Parent taxon: Arachnomorpha according to D. E. G. Briggs et al. 2008

Sister taxa: Alalcomenaeus, Dicranocaris, Leanchoilia, Lemoneites, Misszhouia, Nettapezoura, Sanctacaris, Sidneyia

Subtaxa: none

Ecology: nektobenthic carnivore