This fossil is an Wiwaxia sp. (Walcott, 1911) which might be an extinct mollusc. It was found by Charles Walcott (1850-1927) in 1911 in Burgess Shale of British Columbia Canada. It dates to the Middle Cambrian Period (505 million years ago).
The picture was taken in June 2023 on the first floor of the Smithsonian Museum of Natural History in Washington D.C. USA.
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