NOMEN: Palaeopoda Packard 1903 [A.S. Packard . Hints on the classification of the arthropoda: the group is a polyphyletic one. – P. Amer. Phil. Soc., 1903, 42 (173): 142-161]
ORIGINAL LISTED
MEMBERSHIP (Packard 1903):
Trilobita + Chelicerophora (= Merostomata + Arachnida) 
SENIOR
CIRCUMSCRIPTIONAL SYNONYM:
= Arachnomorpha Lameere 1890
JUNIOR CIRCUMSCRIPTIONAL
SYNONYMS:
= Trilobitoidea Beklemishev
1952
= Amandibulata Kaestner 1956
= Schizoramia Bergstrom 1979
= Arachnata Paulus 1979
TYPIFIED NAME IN BASIC FORMAT: Araneus/fg
(incl. Calymene)
TYPIFIED
NAMES IN USE:
MODERN STATUS: this name can be valid for the taxon which is possibly a plesiomorphon, but regarded to be holophyletic by some authors.