A1G2N1A1T1H4A1N1S1
13 points
AGNATHANS is validvalid
AGNATHAN, one of a group of jawless vertebrates
AGNATHAN, any of a family of eellike fishes, including the lamprey
AGNATHAN, one of a group of jawless vertebrates
AGNATHAN, any of a family of eellike fishes, including the lamprey