Morrison Formation

短语

释义与例句

name
  1. 1.

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

    地质

词源

Named after the town of Morrison, Colorado, where some of the first fossils in the formation were discovered by American geologist Arthur Lakes in 1877.

来源：wiktionary