Location of the Caledonian/Acadian mountain chains in the Early Devonian Epoch. Present day coastlines are shown for reference. Red lines are sutures, capitalized names are the different continents/super-terranes that joined during the Caledonian orogeny. See en:Avalonia, en:Baltica, en:Laurentia.
Literature used to make this map:

.mw-parser-output .smallcaps{font-variant:small-caps}Cocks, L.R.M. &amp; Torsvik, T.H.; 2006: European geography in a global context from the Vendian to the end of the Palaeozoic, in: Gee, D.G. &amp; Stephenson, R.A. (eds.): European Lithosphere Dynamics, Geological Society of London Memoirs 32, pp. 83–95.
Matte, P.; 2001: The Variscan collage and orogeny (480-290 Ma) and the tectonic definition of the Armorica microplate: a review, Terra Nova 13, 122-128.
Stampfli, G.M.; Raumer, J.F. von &amp; Borel, G.D.; 2002: Paleozoic evolution of pre-Variscan terranes: From Gondwana to the Variscan collision, Geological Society of America Special Paper 364, pp. 263-280.
Torsvik, T.H.; Smethurst, M.A.; Meert, J.G.; Van der Voo, R.; McKerrow, W.S.; Brasier, M.D.; Sturt, B.A. &amp; Walderhaug, H.J.; 1996: Continental break-up and collision in the Neoproterozoic and Palaeozoic - A tale of Baltica and Laurentia, Earth-Science Reviews 40, p. 229-258.
Ziegler, P.A.; 1990: Geological Atlas of Western and Central Europe, Shell Internationale Petroleum Maatschappij BV (2nd ed.), ISBN 90-6644-125-9.
Own work
Woudloper