Every once in a while you'll spot a piece of art that makes you do a double-take, but the latest piece by Doi Gen (@doi_gen), a student at the Tokyo University of the Arts, has some people wondering if they're looking at a fossil from long ago or something possibly from another world.

Take a look at Doi Gen's awesome but mysterious marble sculpture on display at his university that has plenty of passerbys wondering if they're looking at a museum exhibit.

Doi Gen's detailed marbled sculpture is actually that of a chambered nautilus, a cephalopod said to have first appeared roughly 500 million years ago! Using a variety of chisels, tools, and other machinery, the student faithfully reproduced the fascinating creature down to each individual tentacle. The sculpture has exploded in popularity on Twitter, with some in the comments wondering if it were an actual fossil or a depiction of something from the universe of H.P. Lovecraft.