Trilobita - Agnostida - Spinagnostidae

PaleoDB taxon number: 231668

Alternative combination: Tomagnostella invalida

Full reference: Y. H. Lu and H. L. Lin. 1989. The Cambrian trilobites of western Zhejiang. Palaeontologia Sinica, new series B 25:1-287

Belongs to Peratagnostus according to S. Peng 1992

Sister taxa: Peratagnostus controversus, Peratagnostus distinctus, Peratagnostus hillardensis, Peratagnostus nobilis, Peratagnostus obsoletus, Peratagnostus orientalis, Peratagnostus zhejiangensis

Type specimen: Its type locality is Xiyangshan, bed 9, which is in a Paibian slope limestone/shale in the Huayansi Formation of China

Ecology: slow-moving epifaunal detritivore