| 词条 | Eccentrotheca |
| 释义 |
| fossil_range = {{fossil range|Early Cambrian}} | taxon = Eccentrotheca | authority = Landing, Nowlan & Fletcher, 1980 }}Eccentrotheca is a genus of sclerite-bearing marine organism known from Cambrian deposits. Its sclerite form rings that are stacked to produce a widening-upwards conical scleritome.[1] Individual plates have been homologized with the valves of brachiopods, and a relationship with the phoronids is also likely at a stem-group level.[1] Its pointed end terminated in a stub that probably fastened it to a hard sea floor; its open end has been interpreted as a filter-feeding aperture.[1] References1. ^1 2 {{Cite journal | last1 = Skovsted | first1 = C. B. | last2 = Brock | first2 = G. A. | last3 = Topper | first3 = T. P. | last4 = Paterson | first4 = J. R. | last5 = Holmer | first5 = L. E. | title = Scleritome construction, biofacies, biostratigraphy and systematics of the tommotiid Eccentrotheca helenia sp. nov. from the Early Cambrian of South Australia | journal = Palaeontology | volume = 54 | issue = 2 | pages = 253–286 | year = 2011 | doi = 10.1111/j.1475-4983.2010.01031.x }} {{Taxonbar|from=Q5332185}}{{Cambrian-animal-stub}} 3 : Prehistoric protostome genera|Cambrian animals of North America|Paleozoic life of Nova Scotia |
| 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。