Solving the Mystery of the Tully Monster

The Tully Monster, an oddly configured sea creature with teeth at the end of a narrow, trunk-like extension of its head and eyes that perch on either side of a long, rigid bar, has finally been identified. A Yale-led team of paleontologists has determined that the 300-million-year-old animal -- which grew to only a foot long -- was a vertebrate, with gills and a stiffened rod (or notochord) that supported its body. It is part of the same lineage as the modern lamprey.

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