Sphaerexochus dimorphus Whittington and Evitt 1953 (trilobite)

Trilobita - Phacopida - Cheiruridae

Full reference: H. B. Whittington and W.R., I.I. Evitt. 1953. Silicified Middle Ordovician trilobites. Geological Society of America Memoir 59:1-139

Belongs to Sphaerexochus according to H. B. Whittington and W.R., II. Evitt 1953

Sister taxa: Sphaerexochus arenosis, Sphaerexochus arenosus, Sphaerexochus atacius, Sphaerexochus brandlyi, Sphaerexochus bridgei, Sphaerexochus britanicus, Sphaerexochus calvus, Sphaerexochus eurys, Sphaerexochus fibrisulcatus, Sphaerexochus glaber, Sphaerexochus hapsidotus, Sphaerexochus hiratai, Sphaerexochus hisingeri, Sphaerexochus johnstoni, Sphaerexochus laciniatus, Sphaerexochus latifrons, Sphaerexochus molongloensis, Sphaerexochus parvus, Sphaerexochus planirachis, Sphaerexochus pulcher, Sphaerexochus romingeri, Sphaerexochus scabridus, Sphaerexochus tuberculatus, Sphaerexochus valcourensis

Type specimen: USNM 116508

Ecology: fast-moving low-level epifaunal carnivore

Distribution:

• Silurian of Canada (13: Northwest Territories, Nunavut collections), Greenland (1)

Total: 14 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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