ABSTRACT Schizaster vicinalis var. libycus Fourtau, 1908 differs from true vicinalis by a number of important characters and should be treated as a separate species, here called Schizaster (Paraster) libycus. Contrary to previous belief there is no unequivocal evidence for the occurrence of Schizaster vicinalis in the Mokattamian rocks of Egypt; Egyptian forms assigned to this species need critical revision. ...
إقراء المزيد