根据隐藏在恐龙化石牙齿中的令人惊讶的新证据，恐龙可能在1亿多年前就以海藻和其他海洋食物为零食。研究人员发现了表明这一点的化学特征。Dinosaurs may have been snacking on seaweed and other ocean foods more than 100 million years ago, according to surprising new evidence hidden in their fossilized teeth. Researchers discovered chemical signatures suggest