| 词条 | Panamintaspis |
| 释义 |
| name = Panamintaspis | image = Panamintaspis_snowi.jpg | image_caption = artist's reconstruction | fossil_range = Late Emsian | regnum = Animalia | phylum = Chordata | classis = Pteraspidomorphi | subclassis = Heterostraci | ordo = Pteraspidiformes | familia = "Protopteraspididae" | genus = Panamintaspis | genus_authority = Elliot & Ilyes, 1996 | species = P. snowi | binomial = Panamintaspis snowi | binomial_authority = Elliot & Ilyes, 1996 }}Panamintaspis snowi is an extinct species of pteraspidid heterostracan agnathan which existed during the early Middle Devonian period of Death Valley, California.[1] Fossils are found in Late Emsian-aged marine strata of the Lost Burro Formation. P. snowi strongly resembles Pteraspis, though while it was originally described as a member of the same family, Pteraspididae,[1] a recent phylogenetic reassessment of the order Pteraspidiformes places P. snowi within the paraphyletic family "Protopeteraspidae," as the sister taxon of the suborder Pteraspidoidei (the super-taxon that contains Pteraspididae together with Protaspididae and Gigantaspis).[2] The generic name refers to the Panamint Range in Death Valley where the holotype and other specimens were found. The specific name honors one J. C. Snow, the man who discovered the holotype.[1] References1. ^1 2 Elliott, David K., and Robert R. Ilyes. "New Early Devonian pteraspidids (Agnatha, Heterostraci) from Death Valley National Monument, southeastern California." Journal of Paleontology (1996): 152-161. {{Taxonbar|from=Q19598375}}{{Pteraspidomorphi-stub}}{{Devonian-jawless-fish-stub}}2. ^Pernegre, Vincent N., and David K. Elliott. "Phylogeny of the Pteraspidiformes (Heterostraci), Silurian–Devonian jawless vertebrates." Zoologica Scripta 37.4 (2008): 391-403. 7 : Pteraspidiformes genera|Devonian jawless fish|Devonian California|Death Valley National Park|Natural history of the Mojave Desert|Panamint Range|Devonian fish of North America |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。