Trilobita - Phacopida - Cheiruridae
Full reference: T. Kobayashi and T. Hamada. 1974. Silurian trilobites of Japan in comparison with Asian, Pacific and other faunas. Palaeontological Society of Japan Special Papers 18:1-155
Belongs to Sphaerexochus according to C. R. Congreve and B. S. Lieberman 2011
See also Kobayashi and Hamada 1964
Sister taxa: Sphaerexochus arenosis, Sphaerexochus arenosus, Sphaerexochus atacius, Sphaerexochus brandlyi, Sphaerexochus bridgei, Sphaerexochus britanicus, Sphaerexochus calvus, Sphaerexochus desertus, Sphaerexochus dimorphus, Sphaerexochus discrepans, Sphaerexochus eurys, Sphaerexochus fibrisulcatus, Sphaerexochus glaber, Sphaerexochus hapsidotus, Sphaerexochus hisingeri, Sphaerexochus johnstoni, Sphaerexochus laciniatus, Sphaerexochus latifrons, Sphaerexochus molongloensis, Sphaerexochus parvus, Sphaerexochus planirachis, Sphaerexochus pulcher, Sphaerexochus romingeri, Sphaerexochus scabridus, Sphaerexochus tuberculatus, Sphaerexochus valcourensis, Sphaerometopus
Type specimen: KPFM 1167-1, a cephalon/head (cranidium). Its type locality is Loc. 3. Ys 15. Gomi Quarry, which is in a Ludlow reef, buildup or bioherm reef rocks in the Fukata Formation of Japan.
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Silurian of Japan (2 collections)
Total: 2 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.