
Retrotransposon-based network of the four investigated laurasiatherian orders. Numbers in balls represent the total number of retrotransposon insertions found for the respective order combination. Yellow balls represent markers merging two orders connected by the closest line. Gray balls represent markers merging the three orders arranged around the ball. The first framed number represents LINEs, the second LTRs, and the third (if present) the number of retropseudogenes.











