<Tr> <Th> Coordinates </Th> <Td> 21 ° 24 ′ 0" N 89 ° 31 ′ 0" W ﻿ / ﻿ 21.40000 ° N 89.51667 ° W ﻿ / 21.40000; - 89.51667 Coordinates: 21 ° 24 ′ 0" N 89 ° 31 ′ 0" W ﻿ / ﻿ 21.40000 ° N 89.51667 ° W ﻿ / 21.40000; - 89.51667 </Td> </Tr> <Tr> <Th> Country </Th> <Td> Mexico </Td> </Tr> <Tr> <Th> State </Th> <Td> Yucatán </Td> </Tr> <Tr> <Td_colspan="2"> Chicxulub crater Location of Chicxulub crater </Td> </Tr>

What element that is rare on earth plays a key role in the kt boundary