Xiphosurans are an order o arthropods relatit tae arachnids, or, accordin tae ane recent study, actually arachnids.[1]
Quick facts Scientific classification, Groups ...
Xiphosura
Temporal range: Hirnantian– Present, 445–0 Ma
PreЄ
Є
O
S
D
C
P
T
J
Pg
N
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| Atlantic horseshae crab (Limulus polyphemus) |
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Scientific classification  |
| Kinrick: |
Animalia |
| Phylum: |
Arthropoda |
| Subphylum: |
Chelicerata |
| Clade: |
Prosomapoda |
| Order: |
Xiphosura
Latreille, 1802 |
|
| Groups |
- †Maldybulakia
- †Willwerathia
- †Kasibelinuridae
- Xiphosurida
- †Lunataspis
- †Bellinurina
- Limulina
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