Asaphus expansus

Asaphus expansus
Temporal range: upper Floian to Darriwilian
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Clade: †Artiopoda
Class: †Trilobita
Order: †Asaphida
Family: †Asaphidae
Genus: †Asaphus
Species:
†A. expansus
Binomial name
†Asaphus expansus
(Wahlenberg, 1821)

Asaphus expansus (/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.

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.

References

  1. ↑ MOORE, R. C. (ED.). 1959. Treatise on Invertebrate Paleontology, Pt. O, Arthropoda 1. Geological Society of America and University of Kansas Press, Lawrence, 560 p
  2. ↑ 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.
  3. 1 2 "Asaphus expansus (Wahlenberg, 1821)". gbif.org. Retrieved 2024-06-12.
  4. 1 2 "Drawings of the cephala of A. Asaphus expansus, B. A. fallax, and C. A. raniceps". researchgate.net. Retrieved 2024-06-12.