The Devonian period (419 to 358 million years ago) brought Gondwana and Laurasia closer, contributing to the Late Devonian extinction and the emergence of the first forest. Icehouse conditions ...

This suggests a more limited range of ornithischian diversity in Laurasia compared to Gondwana during the Early Jurassic. The discovery of Archaeocursor asiaticus provides strong evidence for an ...

By the end of the period 199 million years ago, tectonic forces had slowly begun to split the supercontinent in two: Laurasia in the north and Gondwana in the south. The giant ocean called ...

Laurasia, the northern half, broke up into North America and Eurasia. Gondwana, the southern half, began to break up by the mid-Jurassic. The eastern portion—Antarctica, Madagascar, India ...

When the supercontinent Pangaea split into the northern continent Laurasia and the southern continent Gondwana approximately 195 million years ago, the ocean plate was formerly the seafloor of ...

During the Early Jurassic, ornithischian fossils are abundant and diverse in the Gondwana supercontinent. In contrast, the ornithischian fossil record in Laurasia during this time is less varied ...

The evidence suggests that the first dinosaurs emerged in western Gondwana, which is contemporary ... and Northern Laurasia. Over the course of 135 million years, these dinosaurs became the ...