
Concerning the fossil orders, Dunlop (1996a, b) presents a revised concept of the formerly accepted (Weygoldt and Paulus 1979; Shultz 1990) five fossil orders of Arachnida. The subclasses of Petrunkevitch (1949) have been rejected, Anthracomartida – synonymized with Trigonotarbida. It was concluded that the position of Phalangiotarbida and Haptopoda remains obscure. Kustarachnida, according to Dunlop (1996a, b), represents misidentified opilionids.
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