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image/svg+xml Insect 1/2 2/4 4/5 5 5/7 7 7/8 8/9 8/9 8/9 8/9 8/9 10 Centipede 1/2 3/4 2/45/6 8/9 8/9 8/9 8/9 8/9 ......... genes 8/9 shift forwards 8/9 5/6/7 8/9 Brine shrimp 8/9 8/9 8/9 8/9 8/9 ......... 8/9 8/9 8/9 8/9 7 Mysid 8/9 8/9 8/9 8/9 8/9 ......... 8/9 8/9 8/9 7 7 maxilloped Lobster 8/9 8/9 8/9 8/9 8/9 ......... 8/9 8/9 7 7 maxillopeds 7 genes 8/9 shift backwards genes 8/9 shift backwards Cleaner shrimp 8/9 8/9 8/9 8/9 8/9 ......... 8/9 7 7 maxillopeds 7 genes 8/9 shift backwards 8/9 7 Trilobite reconstruction cephalon thorax pygidium 3-6 3-6 3-6 7-9 7-9 7-9 7-9 7-9 7-10 7-10 7-10 7-10 7-10 7-10 8/9