Bible Dictionaries
Merostomata

Webster's Dictionary

(n. pl.) A class of Arthropoda, allied to the Crustacea. It includes the trilobites, Eurypteroidea, and Limuloidea. All are extinct except the horseshoe crabs of the last group. See Limulus.

Bibliography Information
Webster, Noah. Entry for 'Merostomata'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​m/merostomata.html. 1828.