Northern America carries an impressive collection of fossil finds, and as it seems there still are some that are a complete mystery to today’s scientists. It is the case of a mysterious Godzillus fossil find that has experts stumped.

Last year, a man stumbled upon a mysterious 150 pounds fossil. 6 feet long and 3 feet wide, for the untrained eye the northern Kentucky mysterious fossil find might look like an ordinary pile of rocks. But scientists immediately knew there was something not exactly common to that fossil find. At the moment, experts are still stumped by the Godzillus fossil find, and have still not clearly assessed whether it’s an animal, plant or mineral.

This Tuesday, the mysterious Godzillus fossil was studied in Ohio, at the Dayton Convention Center by scientists with the Geological Society of America. Carl Brett, geologist with the University of Cincinnati, was also there for the meeting. According to Brett, the find is the largest ever fossil of 450 million years ago to be found in Cincinnati.

Ron Fine, the man that first spotted the mysterious fossil, believes it is in fact some sort of seaweed or kelp. “This is the ultimate cold case” and “like Godzilla, it’s a primordial beast that found its way to the modern era” explained Fine. He also mentioned that unlike most fossils found in the Cincinnati area, “the size of your thumbnail or your thumb”, “this thing’s huge”.

The meeting of the scientists with the Geological Society of America in Ohio was supposed to have experts elucidate the mystery. Ben Dattilor, geology assistant professor at University Purdue, explained the purpose is to look “for people who might have an idea of what it is”. But it looks like that’s going to be harder than imagined.

David Meyer is a geology professor also with the University of Cincinnati. He confessed the mysterious Godzillus fossil find has experts stumped. Coming from an expert in the era the fossil is said to belong, it looks like scientists aren’t going to find an answer that soon.

Meyer is the author of a book called “A sea without fish” that pertains to the Cincinnati area 450 million years ago. He said that during that time Cincinnati was under water, at about 100 to 200 feet deep, and it’s likely the fossil might have been similar to a sponge.