Geological location

During most of the Devonian Period, North America, Greenland, and Europe were united into a single Northern Hemisphere landmass, a minor supercontinent called Laurussia or Euramerica.

Extensive terrestrial deposits known as the Old Red Sandstone covered much of its northern area, while widespread marine deposits accumulated on its southern portion.
The paleoequator (the site of the Equator at a point in the geological past) passed through North America and through China, which was at that time a separate landmass.
South America, Africa, India, Australia, and Antarctica were joined into the Southern Hemisphere continent of Gondwana. Parts of this continent were also often covered by seawater.

An ocean covered approximately 85 percent of the Devonian globe. There is limited evidence of ice caps