Chelicerata Heymons, 1901 see Superclass Chelicerata Heymons, 1901 Euchelicerata Weygoldt & Paulus, 1979 [Class] Arachnida Lamarck, 1801 Pantetrapulmonata Shultz, 2007 [Order] Araneae Clerck, 1757 - spiders