Sardolutra ichnusae is an extinct species of otter from the late Pleistocene of Sardinia. It was originally described as Nesolutra ichnusae. It was a rather small species of otter, probably living in the sea. Among its characteristics is a relatively very large baculum, larger than in any living otter. The species probably evolved from a species of Lutra, maybe L. castiglionis.
- A. Malatesta (1977). "The skeleton of Nesolutra ichnusae sp n a Quaternary otter discovered in Sardinia". Geologica Romana. 16: 173–209.
- G.F. Willemsen (1992). "A revision of the Pliocene and Quaternary Lutrinae from Europe". Scripta Geologica. 101: 1–115.
- Malatesta, A., The skeleton of Nesolutra ichnusae sp n a Quaternary otter discovered in Sardinia. Geologica Romana 16 pp. 173–209 (1977).
- Willemsen, G.F.: A revision of the Pliocene and Quaternary Lutrinae from Europe. Scripta Geologica vol 101 (1992).
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