diacranterian
adjective
di·a·cran·te·ri·an
¦dīəˌkran¦tirēən
variants or less commonly diacranteric
-¦terik
: having the back teeth separated by an interval from the front ones
the hognose snake is diacranterian
—opposed to syncranterian 
Word History
Etymology
dia- + Greek krantēres wisdom teeth + English -ian or -ic