<Tr> <Td> Diapsida </Td> <Td> <Table> <Tr> <Td> Lepidosauria </Td> <Td> <P> lizards </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Archosauria </Td> <Td> <Table> <Tr> <Td> Crocodylomorpha </Td> <Td> <P> crocodilians </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Dinosauria </Td> <Td> <P> birds </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td> Lepidosauria </Td> <Td> <P> lizards </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Archosauria </Td> <Td> <Table> <Tr> <Td> Crocodylomorpha </Td> <Td> <P> crocodilians </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Dinosauria </Td> <Td> <P> birds </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> <Tr> <Td> Lepidosauria </Td> <Td> <P> lizards </P> </Td> </Tr> <Tr> <Td> Archosauria </Td> <Td> <Table> <Tr> <Td> Crocodylomorpha </Td> <Td> <P> crocodilians </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Dinosauria </Td> <Td> <P> birds </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr>

An inherited trait used in determining taxonomic relationships among a group of animals