NOMEN: Xiphosura Latreille 1802: T.1:357, T.3:14 [P.A. Latreille. Histoire naturelle, générale et particuliere des Crustacés et des Insectes. T.3, 1802]
ORIGINAL LISTED MEMBERSHIP (Latreille
1802:T.3:14):
Limulus 
JUNIOR
CIRCUMSCRIPTIONAL SYNONYMS:
= Xiphura Leach
1814
=
Acera Blainville 1816
= Merostomata
Dana 1852
=
Xiphosurida Pearce
1936
NON-MONOSEMANTIC
CIRCUMSCRIPTIONAL SYNONYM (for plesiomorphon including †Gigantostraca):
= Merostoma Thorell
& Lindstrom
1885
HEMIHOMONYM: Xiphosura Gronovius 1764 (unavailable generic name, symonym of Limulus Mueller 1785)
TYPIFIED NAME IN BASIC FORMAT: Limulus/fg
TYPIFIED
NAMES IN USE: Limulus (sensu
Mueller 1785), Limulida, Limulidae, Limulides
MODERN
STATUS: 
the valid, the oldest name of a holophyletic taxon.