| 词条 | Williams Formation |
| 释义 |
| name = Williams Formation | image = | caption = | type = Geological formation | age = Late Cretaceous | period = Late Cretaceous | prilithology = | otherlithology = | namedfor = | namedby = | region = California | country = United States | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Williams Formation is a Mesozoic geologic formation. Dinosaur remains (including hadrosaurid fragments) are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1] In 1996 Gino Calvano found foot bones, two cervical vertebrae, and a phalanx (toe) from a hadrosaur in this formation, along the western base of the Santa Ana Mountains in Orange County, California.[2] See also{{Portal|Earth sciences|Paleontology|Dinosaurs||}}
Footnotes1. ^Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607. 2. ^Hilton (2003), p. 241. References
1 : Cretaceous California |
| 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。