Permarachne

Permarachne is an extinct genus of arachnids containing the single species Permarachne novokshonovi from the Permian (Kungurian) of Russia, found in the Koshelevka Formation near the town of Suksun in Perm Krai. It is closely related to modern spiders but unlike them, it has a long thin tail, similar to its relative Attercopus, it is known from the mostly complete holotype PIN 4909/12.^[1] It is about 1 cm in size. It initially was thought to be a spider, but is now thought to form a clade with at least its close relative Attercopus, forming the grouping Uraraneida.^[2]

Permarachne Temporal range: Kungurian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Clade:	Tetrapulmonata
Order:	†Uraraneida
Genus:	†Permarachne Selden and Eskov, 2005
Species:	†P. novokshonovi
Binomial name
†Permarachne novokshonovi (Selden and Eskov, 2005)

References

1. Selden, P. A.; Eskov, K. Y. (2005). "First record of spiders from the Permian period (Araneae: Mesothelae)". Bulletin of the British Arachnological Society. 13 (4): 111–116.
2. Selden, P. A.; Shear, W. A.; Sutton, M. D. (2008). "Fossil evidence for the origin of spider spinnerets, and a proposed arachnid order". Proceedings of the National Academy of Sciences. 105 (52): 20781–20785. doi:10.1073/pnas.0809174106. ISSN 0027-8424. PMC 2634869. PMID 19104044.