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ABSTRACT
Snake fossils from the early Hemphillian Higgins local fauna of Lipscomb County, Texas, include Charina prebottae Brattstrom, Paleoheterodon tiheni Holman, Miocoluber dalquesti gen. et sp. nov. Coluber or Masticophis, and Thamnophis cf. T. sirtalis or T. proximus. Miocoluber is a small colubrid similar in vertebral morphology to Paracoluber Holman and Coluber Linnaeus, but distinct from any living or fossil taxon. Based on these and other Hemphillian-age snakes from Texas, it appears that part of the midcontinental snake fauna changed to its modern composition between mid-Hemphillian and Blancan time.