330-million-year-old shark remains found in Mammoth Cave
2020-01-29 - Hart Co., KY - Photo by Matt Cecil
Researchers discovered fossilized remains of a 330-million-year-old shark in Mammoth Cave. Comments | Permalink
2020-01-29 - Hart Co., KY - Photo by Matt Cecil
Researchers discovered fossilized remains of a 330-million-year-old shark in Mammoth Cave. Comments | Permalink