アメリカ自然史博物館のインスタグラム(amnh) - 6月28日 08時16分

Don't be fooled by the cupcake-like object below-- it's #TrilobiteTuesday! One of the most prolific Silurian trilobite zones in North America can be found beneath the rugged yet picturesque landscape of remote Anticosti Island, Quebec. Surrounded by the surging waters of the Gulf of St. Lawrence, it takes a hearty soul to reach this densely forested, decidedly out-of-the-way locale. But such a venture is apparently well worth the effort for those with a true Paleozoic passion.
Not only are the 6,000 foot thick sedimentary layers of Anticosti bursting with fossils-- in some spots they're quite literally falling out of the cliff-sides-- but many of the trilobite specimens so-far discovered, including Diacalymene schucherti (seen here as an enrolled specimen), Failleana magnifica and Arctinurus anticostiensis, provide solid evidence that back some 430 million years ago this was home to a megafauna, one filled with trilobites of unusual size and spectacular preservation. After a major 2004 scientific revision, 52 trilobite species have now been recognized from Anticosti's rich Silurian layers, comprising an impressive 30 genera. And while material from such formations as the Jupiter and Gun River may not be as well known to either scientists or collectors astrilobites from more renowned North American locales, as more academic and commercial expeditions head to this craggy outpost, Anticosti Island's status as a trilobite haven seems destined to steadily increase. #paleozoic #trilobite #trilobites #amnh #fossil #fossils #naturalhistory #anticosti #anticostiisland

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