On The Affinities of Leptarctus primus of Leidy : American Museum of Natural History, Vol. VI, Article VIII, pp. 229-331. [electronic resource] /
Jacob Lawson Wortman
- Project Gutenberg, 2008
- Project Gutenberg 26542 .
Public domain in the USA.
Electronic text
Paleontology -- Nebraska Paleontology -- Miocene Leptarctus primus