The patriarch most certainly had a method to his lithomania — nothing less than the complete conversion of Alexandria's urban topography.

locally Euclidean

Nevertheless no phylogenetic analysis has retrieved megalograptids in such a basal position: Megalograptus has either been excluded from consideration due to its mix of plesiomorphic, derived and autapomorphic characteristics [ 74 ] or has resolved as part of a derived clade of carcinosomatoids [ 9, 26, 45 ].

But, secondly, such problems also affect any uncritical acceptance of a general Hirstian conception of the school curriculum as a set of relatively discrete disciplines—since it is clear from relatively recent educational history that this is not the only available curriculum conception.