ammonites
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Gateway to the Paleobiology Database
Sidneyia Walcott 1911 (trilobite-like)

PaleoDB taxon number: 19033

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

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

Subtaxa: Sidneyia sinica

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Ecology: nektobenthic carnivore