| 词条 | Hoploscaphites |
| 释义 |
| fossil_range = Upper Cretaceous | image = Hoploscaphites_ammonite.jpg | image_caption = 'Hoploscaphites; Pierre Shale. South Dakota | taxon = Hoploscaphites | authority = Nowak, 1911 | subdivision_ranks = Species | subdivision = See text }} Hoploscaphites is an extinct ammonite genus from the Upper Cretaceous, included in the family Scaphitidae. MorphologyIt is considered by some to be a subgenus of Scaphites. Like Scaphites the shell of Hoploscaphites is involute with the final whorl projecting forward and curved back on itself. Shells vary from compressed to inflated with convex sides. Tubercles normally present may be sparse or absent. DistributionFossils of Hoploscaphites have been found in Antarctica, Austria, Belgium, Bulgaria, Canada (Alberta, Saskatchewan), Chile, Denmark, France, Germany, Greenland, India, the Netherlands, Turkmenistan, Ukraine and the United States (Arkansas, Colorado, Delaware, Kansas, New Jersey, New Mexico, North Dakota, South Dakota, Texas, Wyoming).[1] SpeciesA number of species have been described in the genus:
References{{Portal|Paleontology}}1. ^Hoploscaphites at Fossilworks.org Further reading
8 : Ammonitida genera|Scaphitidae|Ammonites of South America|Cretaceous ammonites|Cretaceous Asia|Cretaceous Chile|Cretaceous Europe|Cretaceous 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。