The polar dinosaurs revealing ancient secrets
BBC News,
The polar dinosaurs revealing ancient secrets (Image credit: Alamy) There's mounting evidence that some dinosaurs lived among…
The polar dinosaurs revealing ancient secrets (Image credit: Alamy) There's mounting evidence that some dinosaurs lived among…
Grigg, G. C., Beard, L. A.
地球的生命长河流淌了逾四十亿年,王朝兴替,风云变幻。所谓“城头变幻大王旗”,在一次次绝灭事件和生命辐射的交替循环之中,不同的生物群落兴衰往复。人类回顾演化历史的时候,往往会选取代表性的某些门类生物,称之为“某某时代”。 而 中生代,就被称为“恐龙的时代” …