Robert Clarkのインスタグラム(robertclarkphoto) - 2月7日 23時51分

The hand of a whale from the Eocene.
The Eocene epoch, lasting from 56 to 33.9 million years ago, is a major division of the geologic timescale. The Eocene spans the time from the end of the Palaeocene Epoch to the beginning of the Oligocene Epoch. The end is set at a major extinction event called the Grande Coupure (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of the epoch are well identified. The evolution of whales represents one of the great stories in macroevolution. It's a narrative that has mostly benefitted from an extraordinary series of fossils recovered from rocks around the world, including challenging field areas in Egypt, Pakistan, and India. #evolution @thephotosociety @ナショナルジオグラフィック @instituteartist @Robert Clark

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する