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Fossil spider's webs from the Namib Desert and the antiquity of Seothyra (Araneae, Eresidae)



Fossil spider's webs from the Namib Desert and the antiquity of Seothyra (Araneae, Eresidae)



Annales de Paleontologie 86(3): 147-155



Several small, dome-like roughly ovate calcitic structures with lobed margins found in Miocene aeolianites of the Namib Desert resemble the clover-leaf shaped roof webs made by extant 'trapdoor' spiders of the burrowing genus Seothyra (Araneae, Eresidae). These webs consist of a mat of densely-woven silk with slits around the periphery, which is covered, on its upper surface, by sand. The fossils indicate that the genus Seothyra or a similar form of spider, has inhabited the Namib since the Miocene period, and that the capture ecology of the Seothyra type is an ancient one.

Accession: 010679503

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DOI: 10.1016/s0753-3969(00)80005-1

Download PDF Full Text: Fossil spider's webs from the Namib Desert and the antiquity of Seothyra (Araneae, Eresidae)



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