talker on MSN11 个月
Giant prehistoric salmon used tusk-like teeth to fight off predators
A giant prehistoric salmon had tusk-like teeth it used to fight off predators, reveals new research. The species that grew up ...
来自MSN11 个月
These giant, prehistoric salmon had tusk-like teeth
O ncorhynchus rastrosus, a giant species of salmon that lived in the North American Pacific Northwest a few million years ago, sported a pair of front teeth that projected out from the sides of ...
Science News1 个月
Giant camel-like creatures lived thousands of years longer than once thought
Carbon-dating teeth suggests two large mammal species roamed northeastern Brazil 3,500 years ago Geologist Fábio Faria and colleagues carbon-dated eight fragments of megafauna teeth of different ...