†subfamily Tonkinellinae Reed 1934 (trilobite)
Trilobita - Corynexochida - Oryctocephalidae
Parent taxon: Oryctocephalidae according to F. A. Sundberg 1994
Sister taxa: Arthricocephalus, Balangia, Barklyella, Changaspis, Cheiruroides, Cheiruroididae, Curvoryctocephalus, Duyunaspis, Euarthricocephalus, Feilongshania, Hunanocephalus, Kunshanaspis, Lancastria, Metabalangia, Metarthricocephalus, Opsiosoryctocephalus, Oryctocara, Oryctocare, Oryctocarinae, Oryctocephalina, Oryctocephalinae, Oryctocephaloides, Oryctocephalops, Paleooryctocephalus, Protoryctocephalus, Sandoveria, Shabaella, Shergoldiella, Thoracocare
Subtaxa: none
Ecology: nektobenthic carnivore
Distribution: there are no occurrences of Tonkinellinae in the database