Paciphacops

Paciphacops is a genus of trilobites from the order Phacopida, suborder Phacopina.[1][2] This genus is easily mistaken for the more common and popular genus Phacops and Kainops.[3] It takes a careful eye to spot the difference. One major difference between Paciphacops and Phacops is that the central raised area (or glabella) of the headshield (or cephalon) extends beyond its anterior margin. The difference between Paciphacops and Kainops is that Kainops has more eye facets than Paciphacops. The skin (or sclera) is thickened and bulges compared to the edge of each lens. This genus can be found primarily in the United States and Australia.

Paciphacops
Paciphacops claviger
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: †Trilobita
Order: †Phacopida
Family: †Phacopidae
Genus: †Paciphacops
Species

See text

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Species
  • Paciphacops birdsongensis, Tennessee.
  • Paciphacops campbelli, Oklahoma.
  • Paciphacops claviger, Nevada.
  • Paciphacops logani, Oklahoma.
  • Paciphacops crosslei, Australia.
  • Paciphacops latigenalis, Australia.

References
  1. 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.
  2. 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.
  3. 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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