<Tr> <Td> Medusozoa </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Hydrozoa (Hydra, siphonophores, etc .) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Cubozoa (box jellies) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Staurozoa </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> "Scyphozoa" (jellyfish, excluding Staurozoa) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> </Td> <Td> <P> Hydrozoa (Hydra, siphonophores, etc .) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <Table> <Tr> <Td> </Td> <Td> <P> Cubozoa (box jellies) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Staurozoa </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> "Scyphozoa" (jellyfish, excluding Staurozoa) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> <P> Hydrozoa (Hydra, siphonophores, etc .) </P> </Td> </Tr> <P> Hydrozoa (Hydra, siphonophores, etc .) </P>

Where does the word cnidaria come from and what does it mean