1 - I have been reliably informed that this is a Megaloceros mandible.
2 - The m3 molar matches a lot of the large fossil cervidae m3 molars ive viewed.
3 - The muscle attachments are very pronounced i have no mandible that matches these attachments.
4 - It is the only mandible ive seen with these muscle attachments on the underside of the jaw.
5 - The muscle attachment pattern on the inner cheek again is like none i posses or have viewed.
6 - In this image although not exact the difference in the angle of a line drawn through the nerve
cavity the bos examples are far more severe.
7 - With bos mandibles either side its not hard to see a big difference .
8 
9
10
11
12 - Note the depth of the cavity for the muscle attachments.
13 - 14 Again note the angle difference with the bos example.
15 - I don't believe this is the mandible of a Megaloceros gigantius but it is from a huge Cervid of Equal size. 
