Lee Kong Chian Natural History Museum
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Xiphosura

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Kingdom:Animalia
Phylum/Division:Arthropoda
Class:Merostomata
Order:Xiphosura

Description

This is an order of marine animals; many groups in this order are extinct. One living group in this order is the horseshoe crabs, which have hardlychanged their form since their appearance on earth over 500 million years ago.

Horseshoe crabs are slow-moving arthropods with an outer horseshoe-shaped shell of diameter 150–250 mm. The body i…
   
Organisms
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