| 词条 | Phymosteus |
| 释义 |
| fossil_range = Early Famennian[1] | regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | classis = Placodermi | ordo = Arthrodira | subordo = Brachythoraci | infraordo = Coccosteina | superfamilia = Dinichthyloidea | familia = Selenosteidae | genus = Phymosteus | species = P. liui | binomial = Phymosteus liui | binomial_authority = Wang, and Zhu }}Phymosteus liui is a large selenosteid arthrodire placoderms known from the Lower Famennian Xiejingshi Formation of Shimen County, Hunan province, in central China.[1] The holotype and only known specimen of P. liui is a V-shaped median dorsal plate with a distinctive nubble texture.[1] Because of the fossil's obviously incomplete nature, its exact relationship to the other selenosteids can not be satisfactorily determined beyond the fact that it was related to them. References1. ^1 2 Wang, Junqing, and Min Zhu. "A new eubrachythoracid arthrodire from the upper devonian of Hunan China." Vertebrata Pal Asiatica 42.2 (2003): 154-161. {{Selenosteidae}}{{Portal|Paleontology}}{{Taxonbar|from=Q20721596}}{{Placoderm-stub}} 3 : Selenosteidae|Placoderms of Asia|Arthrodira incertae sedis |
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