J. WM Jagt and W. J Kennedy (1989)
Acanthoscaphites varians (Lopuski,1911) (Ammonoidea) from the Upper Maastrichtian of Haccourt,NE Belgium
Geologie en Mijnbouw, vol. 68,2 p. 237-240.
09801, 107, Lg, MEUSE2, CRET, PAL
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