Biology:Asaphus expansus
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Short description: Species of trilobite
| Asaphus expansus | |
|---|---|
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | †Artiopoda |
| Class: | †Trilobita |
| Order: | †Asaphida |
| Family: | †Asaphidae |
| Genus: | †Asaphus |
| Species: | †A. expansus
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| Binomial name | |
| †Asaphus expansus (Wahlenberg, 1821)
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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 exception 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. http://biostor.org/reference/76324.
- ↑ 3.0 3.1 "Asaphus expansus (Wahlenberg, 1821)". https://www.gbif.org/species/4635768. Retrieved 2024-06-12.
- ↑ 4.0 4.1 "Drawings of the cephala of A. Asaphus expansus, B. A. fallax, and C. A. raniceps". https://www.researchgate.net/figure/Drawings-of-the-cephala-of-A-Asaphus-expansus-B-A-fallax-and-C-A-raniceps-all_fig2_237578265#:~:text=expansus%20is%20unique%20among%20these,than%20as%20a%20median%20tip.. Retrieved 2024-06-12.
Wikidata ☰ Q19595946 entry
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