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Noun: order Xiphosura
  1. Horseshoe crabs and extinct forms
    - Xiphosura

Type of: animal order

Part of: class Merostomata, Merostomata

Nearest

order Tubulidentata
order Tulostomatales
order Ulvales
order Umbellales
order Uredinales
order Urodella
order Uropygi
order Urticales
order Ustilaginales
order Volvocales
order Xiphosura
order Xyridales
order Zeomorphi
order Zygnemales
order Zygnematales
order-Chenopodiales
ordered
ordered series
orderer
ordering
orderliness