Paciphacops
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Paciphacops is a genus of trilobites within order Phacopida, suborder Phacopina.[1][2] This genus is found primarily in the United States and Australia and is easily mistaken for the genera Phacops and Kainops, which are also popular among collectors.[3] One major difference between Paciphacops and Phacops is that the central raised area (or glabella) of the headshield (or cephalon) extends beyond the headshield's anterior margin. A major difference between Paciphacops and Kainops is the greater number of eye facets in Kainops. The skin (or sclera) of the visual surface in Paciphacops is thickened and bulged compared to the edge of each lens.
Species
A subset of the currently valid species of Paciphacops is below. The geographic region designated below for each species does not necessarily represent the entire geographic range for each species.
- Paciphacops birdsongensis, Tennessee.
- Paciphacops campbelli, Oklahoma.
- Paciphacops claviger, Nevada.
- Paciphacops logani, Oklahoma.
- Paciphacops crosslei, Australia.
- Paciphacops latigenalis, Australia.
References
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- ^ Page Module:Citation/CS1/styles.css has no content.Wright, A. J.; Haas, W. (1990-07-06). "A new Early Devonian spinose phacopid trilobite from Limekilns, New South Wales: morphology, affinities, taphonomy and palaeoenvironment". Records of the Australian Museum. 42 (2): 137–147. doi:10.3853/j.0067-1975.42.1990.111. ISSN 0067-1975. S2CID 53698516.[dead link]
- ^ Page Module:Citation/CS1/styles.css has no content.Ramskold, Lars; Werdelin, Lars (March 1991). "The Phylogeny and Evolution of Some Phacopid Trilobites". Cladistics. 7 (1): 29–74. doi:10.1111/j.1096-0031.1991.tb00021.x. ISSN 0748-3007. S2CID 85076301.
- ^ Page Module:Citation/CS1/styles.css has no content.Haas, Winfried (1998-04-01). "Remarks on the phylogeny of some Phacopinae (Trilobita)". Senckenbergiana Lethaea. 77 (1): 43–45. doi:10.1007/BF03043731. ISSN 0037-2110. S2CID 83064012.
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