Biology:Prosomapoda

From HandWiki
Short description: Clade of arthropods

Prosomapoda
Temporal range: Middle Ordovicianpresent, 467.3–0 Ma
Weinbergina opitzi 589.jpg
Fossil of the basal prosomapod Weinbergina
Cryptocellus goodnighti.jpg
Cryptocellus goodnighti, a ricinuleid arachnid
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Clade: Euchelicerata
Clade: Prosomapoda
Lamsdell, 2013
Groups

Prosomapoda is a clade of euchelicerates including the groups Xiphosura (horseshoe crabs) and Planaterga (a group comprising bunodids, pseudoniscids, chasmataspidids, eurypterids and arachnids), as well as several basal synziphosurid genera.[1] The clade is defined by the lack of exopods (outer branches) of prosomal appendage II-V in the adult instar,[1] where in contrast the exopods of appendage II-V are well-developed in the non-prosomapod euchelicerates Offacolus and Dibasterium.[2][3]

References

  1. 1.0 1.1 Lamsdell, James C. (2012-12-18). "Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura" (in en). Zoological Journal of the Linnean Society 167 (1): 1–27. doi:10.1111/j.1096-3642.2012.00874.x. ISSN 0024-4082. 
  2. Sutton, Mark D.; Briggs, Derek E. G.; Siveter, David J.; Siveter, Derek J.; Orr, Patrick J. (2002-06-22). "The arthropod Offacolus kingi (Chelicerata) from the Silurian of Herefordshire, England: computer based morphological reconstructions and phylogenetic affinities" (in en). Proceedings of the Royal Society of London. Series B: Biological Sciences 269 (1497): 1195–1203. doi:10.1098/rspb.2002.1986. ISSN 0962-8452. PMID 12065034. 
  3. Briggs, Derek E. G.; Siveter, Derek J.; Siveter, David J.; Sutton, Mark D.; Garwood, Russell J.; Legg, David (2012-09-25). "Silurian horseshoe crab illuminates the evolution of arthropod limbs" (in en). Proceedings of the National Academy of Sciences 109 (39): 15702–15705. doi:10.1073/pnas.1205875109. ISSN 0027-8424. PMID 22967511. Bibcode2012PNAS..10915702B. 

Wikidata ☰ Q60712432 entry