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spec: The rusty crayfish was first collected in Illinois in 1973 from the Illinois River at Peoria , and until 1985 was known from only nine locations . The majority of dinosaur species are known from only one or two fossils . '' Exactly how the U.S. has managed to load on so much debt without seeing its net payments rise remains something of a mystery . This morning six-year-old Daniel and his seven-year-old brother , Terence , came to school and placed around Emma 's neck a lovely child-size turquoise Star of David necklace .