Hello, I have domestic dog cranial remains from an early 17th C. English colonial site and would like to know if anyone has information on determining the breed of the dogs from measurements that can be taken. I am aware that differentiating between historic breeds may not be possible using only faunal remains, but I hoped someone might know of a method. The documentary record refers to mastiffs being present at the site, and also some native North American dogs. If there were estimates for metric information, or any remains identified to breed from 17th C England to compare to, it would be very helpful. Most of the pieces we have recovered are mandibles, and most of them have been butchered just behind the canine tooth superoinferiorly, sometimes having been cut all the way through. A few also exhibit cut marks on the exterior surface of the ramus of the mandible. I would be glad to hear any theories on the reason for this also. Thanks