ecofactbook / species / Animalia / Arthropoda / Trilobita / Asaphida / Ptychaspididae / Ptychaspis

Ptychaspis calchas

kingdom: Animalia
phylum: Arthropoda
class: Trilobita
order: Asaphida
family: Ptychaspididae
genus: Ptychaspis
species: Ptychaspis calchas

Where does Ptychaspis calchas live?