アメリカ自然史博物館のインスタグラム(amnh) - 1月20日 05時13分

About 270 million years ago, during the Permian Period, shallows seas covered many spaces that have since become dry land. Here, in a sea overlaying present-day Texas, invertebrates including brachiopods, bryozoans, sponges and microbial mats dominate a reef scene. Ocean life at this time was diverse--until a mass extinction at the end of this period wiped out animals both on land and in the seas, including some 90% of marine invertebrates.
This diorama is located in the Museum's Hall of Ocean Life.

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