English Dictionary

Morrison Formation

固有名詞

(geology) A sequence of Upper Jurassic sedimentary rock in the western United States, noted as the most fertile source of dinosaur fossils in North America.

日本語の意味

（地質学）アメリカ西部に存在する上部ジュラ紀の堆積岩層で、北アメリカにおける恐竜化石の主要な埋蔵場所として知られる。

Paleontologists excavated a new sauropod skeleton from the Morrison Formation during the summer dig.

古生物学者たちは、夏の発掘で北米で最も恐竜化石が豊富な西部の上部ジュラ紀堆積岩層（モリソン層）から新しい竜脚類の骨格を発掘した。

意味（1）

(geology) A sequence of Upper Jurassic sedimentary rock in the western United States, noted as the most fertile source of dinosaur fossils in North America.

Later it was given a member rank and assigned to the Morrison Formation […] .