Aglaspidida
| Aglaspidida |
|
|---|---|
| File:Aglaspis spinifer.jpg | |
| Aglaspis spinifer | |
Scientific classification  |
|
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Stem-group: | Chelicerata |
| Order: | Aglaspidida Walcott, 1911 |
| Families | |
Lua error in Module:Taxonbar/candidate at line 22: attempt to index field 'wikibase' (a nil value).
Aglaspida, more correctly termed Aglaspidida, is an extinct taxon of small, superficially horseshoe crab-like arthropods that were once regarded as basal or ancestral horseshoe crabs. However, anatomical comparisons demonstrate that the aglaspidids cannot be accommodated within the chelicerates.[1] Now, though, they are regarded as a distinct group, possibly being close to the trilobites. An older hypothesis suggesting that they link trilobites with Chelicerata has fallen out of favour.
Aglaspid fossils are found throughout the world, including North America (upper Mississippi valley, Missouri and Utah), Europe, and Australia.
As of 1997, Hou & Bergström split off Strabopidae (which were once regarded as being primitive eurypterids), including the genera Strabops, Paleomerus, Parapaleomerus, and Neostrabops, as its own distinct order/taxon, "Strabopida."
List of Genera
- Aglaspella
- Aglaspis
- Aglaspoides
- Angarocaris
- Australaglaspis
- Beckwithia
- Borchgrevingkium
- Craspedops
- Cyclopites
- Flobertia
- Girardevia
- Glypharthrus
- Kodymirus
- Neostrabops
- Setaspis
- ?Sinaglaspis
- Strabops
- Triopus
- Tuboculops
- Uarthrus
References
<templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." />- Hesselbo, SP. 1992. Aglaspidida (Arthropoda) from the Upper Cambrian of Wisconsin. Journal of Paleontology 66(6)885-923.
- Raasch, GO. 1939. Cambrian Merostomata. Geological Society of America Special Paper 19, 146p.
External links
 |
Wikimedia Commons has media related to Aglaspidida. |
- Mikko's Phylogeny Archive on Aglaspida
- Virtual fossli museum on Aglaspida
- Fossilmall Australian Aglaspida
- Merostomata genera
- Enrico Bonino Aglaspida description page (in Italian)
<templatestyles src="Asbox/styles.css"></templatestyles>
 |
This prehistoric arthropod-related article is a stub. You can help Wikipedia by expanding it. |
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
