In addition to Mastodonsaurus , some of the earliest named genera included Metopias and Rhombopholis in 1842 , Zygosaurus in 1848 , Trematosaurus in 1849 , Baphetes and Dendrerpeton in 1853 , Capitosaurus in 1858 , and Dasyceps in 1859 . Baphetes is now placed as an early tetrapod outside Temnospondyli , and Rhombopholis is now considered a prolacertiform reptile .