Resume de l’article : Une espèce disparue de mammifère ressemblant étrangement au morse découverte

Article title: « Discovery of a new species of extinct mammal resembling the walrus »

The article reports the discovery of a new species of extinct mammal, named « Pelagiarctos thomasi », which lived 20-24 million years ago and is believed to have resembled a walrus. The fossils were found in Sharktooth Hill, California, and indicate that the animal was an effective hunter, with powerful teeth and a body adapted for life in the water. However, it is not a direct ancestor of the modern walrus but rather a distant relative.