Cedar Mountain Formation

Early Cretaceous unit of eastern Utah; its lowest Yellow Cat Member yielded Utahraptor. The age of the Yellow Cat Member is debated (Barremian or older).

地层是在同一环境中、经过一段时间沉积形成的岩体。 DinoDex 中有 1 种恐龙的化石出自这里。

更多来自Utah的恐龙