Tapirus Research

Phylogenetic Analysis of Late Cenozoic Tapirus (Mammalia, Perissodactyla)

Supplementary Data for poster presentation by R. C. Hulbert, Jr. and S. C. Wallace at the 2005 Society of Vertebrate Paleontology meeting in Mesa, Arizona.

  • Revised Abstract of the Poster (updates the one printed in the meeting booklet)
Read Revised Abstract
  • List of Characters and Character States [Download PDF]
  • Character State Matrix [Download PDF]
  • Consensus Cladogram produced by PAUP 4.0b10 using all 5 outgroups. PAUP analysis of the 14 taxa and 79 characters (of which 64 were parsimony informative) produced six equally most parsimonious trees. Each had a tree length of 154, a consistency index (excluding uninformative characters) of 0.65, and a homoplasy index of 0.35.
  • Consensus Cladogram produced by PAUP 4.0b10 using 3 outgroups. PAUP analysis of 12 taxa and 79 characters (of which 48 were parsimony informative) also produced six equally most parsimonious trees. Each had a tree length of 105, a consistency index (excluding uninformative characters) of 0.66, and a homoplasy index of 0.34. The strict consensus tree of these six trees is shown above and to the right. Bootstrap analysis using 1000 replicates revealed strong support (> 90%) for most nodes.

Tapir skeletonLate Miocene Tapirus from Florida

Download a copy of 2005 research paper by R. C. Hulbert published in the Bulletin of the Florida Museum of Natural History. This work includes the description of a new species, Tapirus webbi.

Tapirus polkensis from Florida and Tennessee

Tapirus polkensis is the smallest American species in the genus (either fossil or living), with an estimated body mass of 125 kilograms. It is known from the late Miocene and early Pliocene of central Florida and the late Miocene of eastern Tennessee. The species name comes from Polk County, Florida, where the first specimens where found. But the largest concentration of fossils is from the Gray Site in Tennessee, which has produced over 80 individuals, the largest number of tapirs ever found at one fossil site. Hulbert and co-authors (2009, Journal of Paleontology) described in detail its skull, mandible, and teeth. You can also request either a pdf or a printed reprint of the published paper from Richard Hulbert.

Read Abstract

New species of Tapirus from the early Pleistocene of Florida

Download a copy of 2010 research paper by R. C. Hulbert published in the Bulletin of the Florida Museum of Natural History. This work includes the description of Tapirus lundeliusi and a review of all tapirs from the Blancan Land Mammal Age known from Florida.