Xiphosura

Xiphosura; Temporal range: Hirnantian–Present, 445–0 Ma PreЄ Є O S D C P T J K Pg N
	Atlantic horseshae crab (Limulus polyphemus)
Scientific classification
Kinrick:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Clade:	Prosomapoda
Order:	Xiphosura; Latreille, 1802
Groups
	†Maldybulakia; †Willwerathia; †Kasibelinuridae; Xiphosurida †Lunataspis; †Bellinurina; Limulina; ;

Xiphosurans are an order o arthropods relatit tae arachnids, or, accordin tae ane recent study, actually arachnids.^[1]

References

↑ Sharma, Prashant P.; Ballesteros, Jesús A. (14 Februar 2019). "A Critical Appraisal of the Placement of Xiphosura (Chelicerata) with Account of Known Sources of Phylogenetic Error". Systematic Biology (in Inglis). doi:10.1093/sysbio/syz011.