New fossils of Sirenia from the Middle Eocene of Navarre (Western Pyrenees): the oldest West European sea cow record
H. Astibia,
N. Bardet,
X. Pereda-Suberbiola,
A. Payros,
V. de Buffrenil,
J. Elorza,
J. Tosquella,
A Berretega, and
A. Badiola
2010
Article
Geological Magazine
147(5):665-673
Find it at:
http://dx.doi.org/10.1017/S0016756810000130