Megahippus
Fossil remains of "Megahippus" have been found across the U . S . , from Montana to Florida . 
<triplet> U.S. <subj> Montana <obj> contains administrative territorial entity <subj> Florida <obj> contains administrative territorial entity <triplet> Montana <subj> U.S. <obj> country <triplet> Florida <subj> U.S. <obj> country