<Tr> <Th> Denarius </Th> <Td> ​ ⁄ </Td> <Td> ​ ⁄ </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 8 </Td> <Td> 16 </Td> <Td> 32 </Td> <Td> 64 </Td> </Tr> <Tr> <Th> Quinarius Argenteus </Th> <Td> ​ ⁄ </Td> <Td> ​ ⁄ </Td> <Td> 1⁄2 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 8 </Td> <Td> 16 </Td> <Td> 32 </Td> </Tr> <Tr> <Th> Sestertius </Th> <Td> ​ ⁄ </Td> <Td> ​ ⁄ </Td> <Td> 1⁄4 </Td> <Td> 1⁄2 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 8 </Td> <Td> 16 </Td> </Tr> <Tr> <Th> Dupondius </Th> <Td> ​ ⁄ </Td> <Td> ​ ⁄ </Td> <Td> ​ ⁄ </Td> <Td> 1⁄4 </Td> <Td> 1⁄2 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> 8 </Td> </Tr>

What is the name of ancient roman coins