Asaphus expansus
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| Asaphus expansus Temporal range: [1]
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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
[edit | edit source]Most specimens have been obtained in Northern Europe, with one known exception being in North America.[3]
Characteristics
[edit | edit source]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
[edit | edit source]- ^ 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
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