The teeth from Maryland's Astrodon were cut open in 1858 & revealed this pattern, hence its name
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who can read the Constitution in English and write their names, and to all ...... 
History of Louisiana  An aerial view reveals the circular pattern of... [DOC] [TLE] Best Fossils of All Time | Rankly [PAR] Name; Rank / Weighted; Score; Votes; In my order.