What is another word for xiphosura?
Pronunciation: [zˈɪfəʒəɹə] (IPA) 
Xiphosura, also known as horseshoe crabs, are a prehistoric group of marine arthropods that have been around for over 450 million years. Although they are commonly referred to as horseshoe crabs, they are not true crabs and are more closely related to spiders and scorpions.
There are several synonyms for the word xiphosura, including Limulus, which is the genus name for modern horseshoe crabs. Other synonyms include the archaic term "helmet crab," due to their hard exoskeleton resembling a medieval helmet, and "king crab," due to their large size and regal appearance.
Horseshoe crabs are important to the medical industry as their blue blood contains a substance used to detect bacterial contamination in medical equipment. Despite their importance, horseshoe crab populations are declining due to overfishing and habitat destruction, making conservation efforts crucial for their survival.
