Tetracentron
The Classic Surtarbrandur Floras
2011
Thomas Denk, Fridgeir Grimsson, Reinhard Zetter, Leifur A Simonarson
Springer
Chapter 5
Download (.pdf) The Archaic Floras
2011
Thomas Denk, Fridgeir Grimsson, Reinhard Zetter, Leifur A Simonarson
Springer
Chapter 4
Pollen, fruits, and leaves of Tetracentron (Trochodendraceae) from the Cainozoic of Iceland and western North America and their palaeobiogeographic implications
2008
Fridgeir Grimsson, Thomas Denk, Reinhard Zetter
Grana
