Abstract: Despite several important discoveries, extending over more than 120 years, our knowledge of early land vertebrates is still sparse. The earliest tetrapod remains are known from the Upper Devonian of East Greenland1–3 and Australia4–6, but the tetrapod fossil record does not become plentiful until Coal Measure times, in the Upper Carboniferous, some 50 Myr later. Finds in the Lower Carboniferous are very few indeed. Apart from two localities in West Virginia, USA7,8, and one in Nova Scotia, Canada9, all other Lower Carboniferous tetrapod sit...
(read more)
Topics: 
Paleontology