Gene orders (-GO) found among brachyuran crabs. Red boxes indicate protein coding genes. Blue boxes indicate tRNA’s. Green boxes indicate rRNAs. Purple boxes indicate the control region (CoRe). The red lines along the bottom of the gene orders represents areas within the gene order that are located on the negative strand. Not shown are the 9 unique gene orders for the freshwater crabs (see Zhang et al. 2020). The CREx results are listed for the different gene orders. In the associated table, gene orders with high similarity (> 1000) have red boxes while those with low similarity (< 200) have blue boxes. Intermediate similarity remains white.