Asaphus expansus explained

Asaphus expansus (pronounced as //ˈæsæfʌs ɛkspænsʌs//) 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.^[1]

Location

Most specimens have been obtained in Northern Europe, with one known exeption 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.

References

^{[2] [3]}

Notes and References

1. International Commission on Zoological Nomenclature. 1982. Direction 111 - Entomostracites punctatus Wahlenberg (Trilobita) (Official List Of Specific Names No. 1595): Date To Be Cited As [1818]]. Bulletin of Zoological Nomenclature. 39.
2. Web site: Asaphus expansus (Wahlenberg, 1821) . gbif.org. 2024-06-12.
3. Web site: Drawings of the cephala of A. Asaphus expansus, B. A. fallax, and C. A. raniceps . researchgate.net. 2024-06-12.