<Li> Scattered disc objects (SDOs) <Ul> <Li> Resonant SDOs </Li> </Ul> </Li> <Ul> <Li> Resonant SDOs </Li> </Ul> <Li> Oort cloud objects (ICO / OCOs) </Li> <Tr> <Td> Trans - Neptunian dwarf planets are called "plutoids" </Td> </Tr>

Which describes a possible origin for the oort cloud