鬆卷角石
鬆卷角石(學名:)是一屬已滅絕的鸚鵡螺類。牠們生活在晚奧陶紀的海洋中。其化石分布於北美及中國。[1]
鬆卷角石屬 化石时期:晚奧陶紀 | |
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Aphetoceras americanus的化石 | |
藝術家筆下的復原圖:一隻房角石正在捕食鬆卷角石,一旁有些許Cyclostomiceras屬動物游著 | |
科学分类 | |
界: | 动物界 Animalia |
门: | 軟體動物門 Mollusca |
纲: | 頭足綱 Cephalopoda |
目: | 触环角石目 Tarphycerida |
科: | †爱沙尼亚角石科 Estonioceratidae |
属: | †鬆卷角石屬 Aphetoceras Hyatt, 1894 |
模式种 | |
Aphetoceras americanum Hyatt, 1894 | |
種 | |
見內文 |
物種[1]
- Aphetoceras americanum
- Aphetoceras attenuatum
- Aphetoceras boreale
- Aphetoceras evolutum
- Aphetoceras farnsworthi
- Aphetoceras oderi
- Aphetoceras ruedemanni
- Aphetoceras subcostulatum
參考文獻
- Aphetoceras, p K358 in Vol K of the Treatise on Invertebrate Paleontology in the section on the Estonioceratidae, p K357-K359, included in the Chapter on the Tarphycerida by Furnish and Glenister starting with page K343.
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