Browsing by Author "Grierson, James D."
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Item New terrestrial arachnids from the Devonian of Gilboa, New York (Arachnida, Trigonotarbida). American Museum novitates ; no. 2901(New York, N.Y. : American Museum of Natural History, 1987) Shear, William A.; Selden, Paul.; Rolfe, W. D. I. (William David Ian), 1936-; Bonamo, Patricia M.; Grierson, James D."Three new genera and seven new species of the arachnid order Trigonotarbida are described based on remarkably well preserved fossils from the late Middle Devonian (Givetian) of Gilboa, New York: Gilboarachne griersoni, Gelasinotarbus reticulatus, G. bonamoae, G. bifidus, G. heptops, G.? fimbriunguis, and Aculeatarbus depressus. A brief review of other known Devonian trigonotarbids is presented, and certain misconceptions about the order are rectified, including the nature of the eyes, chelicerae, claws, and abdominal segmentation. Trigonotarbida is shown by cladistic analysis to be the plesiomorphic sister-group of Araneae + Amblypygi + Uropygi + Schizomida"--P. 2.