Trilobita - Agnostida - Clavagnostidae

Alternative combination: Tomorhachis spinosa

Synonyms: Acanthagnostus longispinus Qian 1982, Clavagnostus longispinus Qian 1982, Clavagnostus sulcatus Westergard 1946

Belongs to Clavagnostus according to S. Peng and R. A. Robison 2000

Sister taxa: Clavagnostus (Leptagnostus), Clavagnostus (Paraclavagnostus), Clavagnostus burnsi, Clavagnostus calensis, Clavagnostus cuneatus, Clavagnostus repandus, Clavagnostus subconicus, Clavagnostus taoyuanensis, Clavagnostus trispinus

Ecology: slow-moving nektonic suspension feeder