4 min read When the Devonian period dawned about 416 million years ... jaws lined with bladelike plates that acted as teeth. Early placoderms fed on mollusks and other invertebrates, but later ...

During this period, novel structures such as tracheids ... As a predominant and typical component of Early Devonian floras, Zosterophyllopsida has a long history of research and has been widely ...

Among the many fossilized stars is a 26-meter-long Mamenchisaurus jingyanensis, a gigantic herbivore that lived around 150 million years ago and had one of the longest necks of its species. It is ...