アメリカ自然史博物館のインスタグラム(amnh) - 1月18日 03時03分

It's time for #TrilobiteTuesday! A number of locations that border Lake Erie in western New York State have long been noted for their exceptional Middle Devonian fauna. Reports regarding the area's 385 million year-old crinoids, brachiopods, and bivalves date back nearly two centuries. Despite the attention those abundant fossils have long drawn from local residents, it is the unique trove of trilobites that can be found in either the area's rich Windom Shale or Moscow formation limestone that has continually attracted a lion's share of the acclaim. Both Eighteen Mile Creek, named for its distance from the Niagara River, and the nearby Penn-Dixie quarry are of particular paleontological interest due to their beautifully preserved examples of Eldredgeops (Phacops) rana rana. The specimen pictured here is Greenops barberi.

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