Asaphus expansus
| Asaphus expansus Temporal range: [1] | |
|---|---|
 | |
Scientific 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.[2]
Location
Most specimens have been obtained in Northern Europe, with one known exeption being in North America.[3]
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.[4]
References
- ^ 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
- ^ 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.
- ^ a b "Asaphus expansus (Wahlenberg, 1821)". gbif.org. Retrieved 2024-06-12.
- ^ a b "Drawings of the cephala of A. Asaphus expansus, B. A. fallax, and C. A. raniceps". researchgate.net. Retrieved 2024-06-12.