Lichida                                                                                    Online

  Leonaspis (I)                                                                                (-)

         Hamar Laghdad Formation, Middle Devonian (ca. 390Mio. Years)

  Phacopida                                                                          

  Zlichovaspis sp. (I)                                                                       (+)

         Laatchana Formation, Middle Devonian (ca. 390Mio. Years)

  Metacanthina barrandei (I)                                                            (+)

         Laatchana Formation, Middle Devonian (ca. 390Mio. Years)

  Phacops rana (I) (II)                                                                      (-)

         Hamar Laghdad Formation, Middle Devonian (ca. 390Mio. Years)

  Phacops sp. (I)                                                                              (-)

         Hamar Laghdad Formation, Middle Devonian (ca. 390Mio. Years)

  Proetida

  Cornuproetus cornutus                                                                   (+)

         Hamar Laghdad Formation, Middle Devonian (ca. 390Mio. Years)

  Proetus sp.                                                                                    (+)

         Fezzou, Middle Devonian (ca. 390Mio. Years)