Published online by Cambridge University Press: 01 May 2009
Recent work on various Triassic, Jurassic and Cretaceous radio-larian faunas from sections in northern and north-eastern Iraq, all of known stratigraphic horizon, and from elsewhere in the Middle East, confirms the existing view that as absolute indicators of age, without associated evidence, these fossils as commonly preserved are of little use, but that in local and regional problems where they are associated with other evidence they may be of considerable stratigraphical value. The genus Meyenella is not regarded as a useful indicator for the Jurassic.