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Limulus Drawing
The Horseshoe Crab
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Anatomy
Gross Anatomy Vision Circulatory System Digestion Nervous System Anatomical Development
Top View
Ventral View
Diagram of the Blood Flow
The Circulatory System

A view of the underside of the horseshoe shows how the anterior pair of arteries go to the base of the brain, where they form a closed circle around the eusophagus. They then move backward along the brain and spinal column.

Illustration (modified) by A. Milne Edwards