<Table> <Tr> <Th_colspan="2"> Amphibians Temporal range: Late Devonian--present, 370--0 Ma PreЄ Є O Pg </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Clockwise from top right: Seymouria, Mexican burrowing caecilian, eastern newt and leaf green tree frog </Td> </Tr> <Tr> <Th_colspan="2"> Scientific classification </Th> </Tr> <Tr> <Td> Kingdom: </Td> <Td> Animalia </Td> </Tr> <Tr> <Td> Phylum: </Td> <Td> Chordata </Td> </Tr> <Tr> <Td> Clade: </Td> <Td> Batrachomorpha </Td> </Tr> <Tr> <Td> Class: </Td> <Td> Amphibia Gray 1825 </Td> </Tr> <Tr> <Th_colspan="2"> Subclasses </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> † Temnospondyli </Li> <Li> Lissamphibia (modern amphibians) </Li> </Ul> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Amphibians Temporal range: Late Devonian--present, 370--0 Ma PreЄ Є O Pg </Th> </Tr> <Tr> <Td_colspan="2"> Clockwise from top right: Seymouria, Mexican burrowing caecilian, eastern newt and leaf green tree frog </Td> </Tr> <Tr> <Th_colspan="2"> Scientific classification </Th> </Tr>

Compare the external characteristics of each order of amphibians