Meanings of remarkable dissimilarity in English

There was a remarkable dissimilarity between Christ and his celebrated precursor.

Although they were nominally attired in the same way, there was a remarkable dissimilarity in their appearance.

The Synoptic problem consists in the difficulties raised by the fact that the Synoptic Gospels show both a remarkable similarity and a remarkable dissimilarity.

I had already been struck with the remarkable dissimilarity between the Murrumbidgee and all the interior rivers previously seen by me, especially the Darling.