Supplemental material: Revised age of the late Neogene terror bird (Titanis) in North America during the Great American Interchange
journal contributionposted on 01.01.2007 by Bruce J. MacFadden, et al.
Any type of content formally published in an academic journal, usually following a peer-review process.
GSA Data Repository Item 2007035, Geology, Vol. 35, p. 123. File size: 8 p., about 1399 KB.