F Thirion and A Blieck (2009)
NEW PTERASPIDIFORM HETEROSTRACANS (VERTEBRATA) FROM THE LOWER DEVONIAN OF LA GILEPPE AND NONCEVEUX,BELGIUM
Geologica Belgica, vol. 12/1-2 p. 31-43.
10305, 136, 159, Lg, SYNVE, SYNDIN, DEVINF, PALBOT
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