Crab on the sternum, form a monophyletic group. Numbers of extant and extinct (†) species are given in brackets. The superfamily Eocarcinoidea, containing "Eocarcinus" and "Platykotta", was formerly thought to contain the oldest crabs; it is now considered part of the Anomura. Both the constellation Cancer and the astrological sign Cancer are named after the crab, and depicted as a crab. William Parsons, 3rd Earl of Rosse drew the Crab Nebula in 1848 and noticed its similarity to the animal; the Crab Pulsar lies at the centre of the nebula. The Moche people of ancient Peru worshipped nature, especially the sea,
Boston crab "Backbreaker", before that term became known for its current usage. In modern wrestling, the Boston crab is not treated as a lethal submission maneuver (with the exception of its use by Chris Jericho, who calls it the 'Walls of Jericho'), even though it was considered a match-ending hold in the past. In Japan, it is commonly used as a hold to defeat young and inexperienced wrestlers; the ability to overcome the hold is considered a sign of growth. In submission grappling, the Boston crab (generally the half Boston crab) can be used to set up a straight ankle lock. On