The sloth and bison species have been extinct for at least ... La Brea Tar Pits Other ancient large mammals that became extinct around the same era - following the last ice age - include massive ...

But those bison are also an invasive species, not native to the Golden State. The mammals’ very existence threatens Catalina Island’s entire ecosystem, scientists said. The bison ...

During the autopsy of an ancient bison in March, scientists at the university ... believed that the modern white hares are a separate species. During the research, we confirmed the phylogenetic ...