A rare Jurassic theropod tooth from the Tiouraren Formation (Niger). This tooth features some good enamel and serrations, but it is missing the tip and has a couple of neat repairs.
It's very difficult to ID teeth from the Jurassic of Niger as there's only a small amount of published material to compare against, however the size, shape and serration counts suggest this one belongs to a Megalosaurid, most likely Afrovanator abakensis. Comes labelled and stored in an acrylic case with padding.
Tooth measurements are as follows:
Crown Base Ratio: 0.53
Crown Height Ratio: 1.63
Mesial Serration Count (per 5mm): 14
Distal Serration Count (per 5mm): 11
The mesial carina appears to end less than 1/2 way down the crown.