 The most basal group of temnospondyls is the superfamily Edopoidea . Edopoids have several primitive or plesiomorphic features , including a single occipital condyle and a bone called the intertemporal that is absent in other temnospondyls . Edopoids include the Late Carboniferous genus Edops and the family Cochleosauridae . Dendrerpetontidae has also been included in Edopoidea , and is the oldest known temnospondyl family . Balanerpeton woodi is the oldest species , having been present over 330 million years ago during the Viséan stage of the Early Carboniferous . Recent analyses place Dendrerpetontidae outside Edopoidea in a more derived position . Other primitive temnospondyls include Capetus and Iberospondylus . Saharastega and Nigerpeton , both described in 2005 from Niger , are also primitive yet come from the Late Permian . They are almost 40 million years younger than other basal temnospondyls , implying a long ghost lineage of species that are not yet known in the fossil record . 
 The most basal group of temnospondyls <a href='drop_aux' title='1'><mark>is</mark></a>the superfamily Edopoidea . Edopoids <a href='got' title='2'><mark>have</mark></a> several primitive or plesiomorphic features , including a single occipital condyle and a bone called the intertemporal <a href='null_relcl' title='3'><mark>that</mark></a><a href='drop_aux' title='4'><mark>is</mark></a>absent in other temnospondyls . Edopoids include the Late Carboniferous genus Edops and the family Cochleosauridae . Dendrerpetontidae <a href='been_done' title='5'><mark>has</mark></a> also been included in Edopoidea , and <a href='drop_aux' title='6'><mark>is</mark></a>the oldest known temnospondyl family . Balanerpeton <a href='uninflect' title='7'><mark>woodi</mark></a> <a href='drop_aux' title='8'><mark>is</mark></a>the oldest species , having been present over 330 million years ago during the Viséan stage of the Early Carboniferous . Recent analyses place Dendrerpetontidae outside Edopoidea in a more derived position . Other primitive temnospondyls include Capetus and Iberospondylus . Saharastega and Nigerpeton , both described in 2005 from Niger , <a href='drop_aux' title='9'><mark>are</mark></a>also primitive yet come from the Late Permian . They <a href='drop_aux' title='10'><mark>are</mark></a>almost 40 million years younger than other basal temnospondyls , implying a long ghost lineage of species <a href='null_relcl' title='11'><mark>that</mark></a>are not yet known in <a href='None' title='12'><mark>the</mark></a>fossil <a href='negative_concord' title='13'><mark>record</mark></a> . 
The most basal group of temnospondyls the superfamily Edopoidea . Edopoids got several primitive or plesiomorphic features , including a single occipital condyle and a bone called the intertemporal absent in other temnospondyls . Edopoids include da Late Carboniferous genus Edops and tdafamily Cochleosauridae . Dendrerpetontidae done also been included in Edopoidea , and the oldest known temnospondyl family . Balanerpeton woodied the oldest species , havin been present ova 330 million yrs ago during the Viséan stage of the Early Carboniferous . Recent analyses place Dendrerpetontidae outside Edopoidea in a more derived position . Other primitive temnospondyls include Capetus and Iberospondylus . Saharastega and Nigerpeton , both described in 2005 from Niger , also primitive yet come from the Late Permian . They almost 40 million yeyrsounger den other basal temnospondyls , implying a long ghost lineage of species ain't yet known in fossil no record .