Trilobita - Asaphida - Trinucleidae
PaleoDB taxon number: 19920
Parent taxon: Trinucleidae according to P. A. Jell and J. M. Adrain 2002
Sister taxa: Anebolithus, Bergamia, Bettonolithus, Botrioides, Cryptolithinae, Cryptolithoides, Deanaspis, Declivolithus, Decordinaspis, Eotrinucleus, Famatinolithus, Furcalithus, Guandacolithus, Gymnostomix, Hanchungolithinae, Hanchungolithus, Incaia, Lloydolithus, Lordshillia, Marekolithus, Marrolithinae, Marrolithoides, Marrolithus, Myinda, Myindella, Myttonia, Nankinolithus, Ningkianolithus, Novaspis, Onnia, Parkesolithus, Protolloydolithus, Reedolithus, Reuscholithus, Salterolithus, Stapeleyella, Tretaspidinae, Trinucleinae, Trinucleus, Xiushuilithus, Yinpanolithus
Subtaxa: Cryptolithus bellulus, Cryptolithus lorettensis, Cryptolithus recurvus, Cryptolithus tesselatus
Ecology: fast-moving low-level epifaunal suspension feeder