北九州産漸新統ホホジロザメ属魚類化石

抄録

Sixteen fossil teeth of the lamnid shark, Carcharodon angustidens, from Kitakyushu are described here. These teeth are from a bed of the Ashiya Group which is considered to be the Late Oligocene. There is a wide range of morphological variations among these fossil teeth, which represent individual and positional differences on the jaw.