You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: "D" IN SCIENCE 
Clue: Sharks first inhabited the waters during this period of the Paleozoic era named for an English county
devonian

Category: HISTORY 
Clue: This "Great" king who died in 4 B.C. married Mariamne, the last princess of the Maccabees' line
herod the great

Category: JOAQUIN 
Clue: Responsible for economic & monetary affairs, Joaquin Almunia is a prominent official in the EC, this organization

european commission