Asaphus expansus


Asaphus expansus is the type species of the asaphid trilobite genus Asaphus. It was previously classified as Entomostracites expansus before being split off into its own genus.

Location

Most specimens have been obtained in Northern Europe, with one known exception being in North America.

Characteristics

Asaphus expansus differs from related species in its genus by having a cranidium that is considered broad, as opposed to its more medium sized counterparts. Examples of these other species are A. fallax and A. raniceps.