<P> anomalocarid - like taxa, including modern tardigrades as well as extinct animals like Kerygmachela and Opabinia </P> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Anomalocaris </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> arthropods, including living groups and extinct forms such as trilobites </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> </Td> <Td> <P> Anomalocaris </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> arthropods, including living groups and extinct forms such as trilobites </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> <P> Anomalocaris </P> </Td> </Tr>

Besides arthropods what other major groups make up the invertebrates