地层 · Ceará
Romualdo Formation
Early Cretaceous (late Aptian) Konservat-Lagerstätte of the Araripe Basin, north-east Brazil; limestone concretions in shales, formerly the Romualdo Member of the Santana Formation.
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。
