<Tr> <Th_colspan="2"> Thiomargarita namibiensis </Th> </Tr> <Tr> <Td_colspan="2"> Stained micrograph of Thiomargarita namibiensis </Td> </Tr> <Tr> <Th_colspan="2"> Scientific classification </Th> </Tr> <Tr> <Td> Domain: </Td> <Td> Bacteria </Td> </Tr>

Who discovered the bacteria which is the smallest and the largest bacteria