Xiphosura
Arthropoda Xiphosura

Xiphosura

Chelicerata ├─Merostomata │ ├─Xiphosura │ │ ├─Bunodidae │ │ └─┬─Bellinurina │ │ └─Limulina │ │ ├─Paleolimulidae │ │ └─Limulidae │ └─┬─Chasmataspida │ └─Eurypterida └─Arachnida


Taxonomy
   Contents
   Remarks
   Evolution
Systematics
   Basal Xiphosura
      Weinberginidae
      Bunodidae
   Xiphosurida
      Bellinurina
      Limulina
         Paleolimulidae
         Limulidae
Links & References

Limulus polyphemus
The horseshoe crab Limulus polyphemus
Photo by Jirí Bukovský, Encyclopedia of Life, - Limulidae, Creative Commons Attribution Non-Commercial


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