Phylogenetic analysis of morphological data proceeds from a fixed set of primary homology statements, the character-by-taxon matrix. However, there are cases where multiple conflicting homology ...

Figure 1. Transthoracic echocardiogram (subcostal view) showing the atrial septal aneurysm (red arrows). Note the hyperechoic area within the atrial septal aneurysm suggestive of thrombus. There have ...