Bonnethead Bonnethead The bonnethead shark or shovelhead ("Sphyrna tiburo") is a small member of the hammerhead shark genus "Sphyrna", and part of the family Sphyrnidae. It is an abundant species on the American littoral, is the only shark species known to display sexual dimorphism in the morphology of the head, and is the only shark species known to be omnivorous. Characterized by a broad, smooth, spade-like head, it has the smallest cephalofoil (hammerhead) of all "Sphyrna" species. The body is grey-brown above and lighter on the underside. Typically, bonnethead sharks are about long, with a maximum size of about . Females
What Is a Nation? and continues to be invoked. Political historian Karl Deutsch, in a quote sometimes mistakenly attributed to Renan, said that a nation is "a group of people united by a mistaken view about the past and a hatred of their neighbours". Benedict Anderson's 1983 work Imagined Communities, which states that a nation is an "imagined political community", argues that Renan contradicts himself when he says French people must have forgotten the St. Bartholomew's Day massacre, yet does not explain what it is. In other words, Renan assumes that all his readers will remember the very massacre he says they have forgotten.