| 词条 | Sagenocrinites |
| 释义 |
| name = Sagenocrinites | fossil_range = Silurian | image = SagenocrinitesExpansus-NaturalHistoryMuseum-August23-08.jpg | image_width = 100px | image_caption = Sagenocrinites expansus (Phillips), on display at the Natural History Museum | regnum = Animalia | phylum = Echinodermata | subphylum = Crinozoa | classis = Crinoidea | ordo = Sagenocrinida | genus = Sagenocrinites | genus_authority = | subdivision_ranks = Species | subdivision = }} Sagenocrinites is an extinct genus of crinoid from the Silurian period. During the Silurian period, a sea-covered Britain that was shallower in the south and deeper in the north lay south of the equator with a tropical to sub-tropical climate. Therefore, in the United Kingdom, amongst Silurian fossils, such as brachiopods, trilobites and graptolites, coral-like organisms like sagenocrinites can be found. Because this species belongs to a genre of crinoids which is very sensitive concerning the environmental influences their petrified remains can therefore be viewed as indicators of the climate conditions. By using a geological world map, these fossils will help to create a complex climate model, tracing back more than 400 million years to the ancient Earth. With a high accuracy it will be possible to reconstruct the climate history of our planet. Sources
External links
4 : Sagenocrinida|Prehistoric crinoid genera|Silurian animals of North America|Prehistoric echinoderms 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。