This catalog contains exceptional teeth from Squalicorax hartwelli, an extinct Crow shark. These teeth were found in the Niobara Chalk Fm. of Gove County, Kansas which was part of the great inland sea area of North America during the Cretaceous (80-90 million years ago). These are beautiful, well preserved teeth. These teeth are high quality - extra nice condition and preservation. Note - this Squalicorax features a very wide root and a shorter & wider crown. Note - 1) All teeth sizes are slant height unless otherwise noted.