<P> Psittacosauridae (s, 1) </P> <Tr> <Td> </Td> <Td> <P> Ceratopsidae (s) </P> </Td> </Tr> <P> Ceratopsidae (s) </P> <Tr> <Td> Saurischia </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Sauropodomorpha (s) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Aucasaurus (s) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Carnotaurus (s) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Ceratosaurus (s) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Coelurosauria </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Dilong (3?) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Other tyrannosauroids (s, 1) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Juravenator (s, 3?) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Sinosauropteryx (3 +) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Maniraptora </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Therizinosauria (1, 3 +) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Alvarezsauridae (3?) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Oviraptorosauria (4, 6) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> Paraves </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Troodontidae (3 +, 6) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Other dromaeosaurids </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Sinornithosaurus (3 +, 6) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Microraptor (3 +, 6, 7) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Scansoriopterygidae (3 +, 6, 8) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Archaeopterygidae (3 +, 6, 7) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Jeholornis (6, 7) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Confuciusornis (4, 6, 7, 8) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> </P> <Table> <Tr> <Td> </Td> <Td> <P> Enantiornithes (4, 6, 7, 8) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> <P> Neornithes (4, 6, 7, 8) </P> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td> </Td> </Tr> </Table> </Td> </Tr>

The first function of feathers was most likely