Revised age of the late Neogene terror bird (Titanis) in North America during the Great American Interchange

@article{MacFadden2007RevisedAO,
  title={Revised age of the late Neogene terror bird (Titanis) in North America during the Great American Interchange},
  author={Bruce J. MacFadden and Joann Labs-Hochstein and Richard C. Hulbert and Jon Baskin},
  journal={Geology},
  year={2007},
  volume={35},
  pages={123-126}
}
The giant flightless terror bird Titanis walleri is known from Florida and Texas during the late Neogene. The age of T. walleri is problematic because this taxon co-occurs with temporally mixed (i.e., time-averaged) faunas at two key sites. Thus, prior to this study, T. walleri from the Santa Fe River, Florida (type locality), was either as old as late Pliocene (ca. 2.2 Ma) or as young as latest Pleistocene (ca. 15 ka). Likewise, T. walleri from the Nueces River, Texas, was either early… 

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