Exploring the limits of morphospace: Ontogeny and ecology of late Viséan ammonoids from the Tafilalt, Morocco Author Klug, Christian Author Baets, Kenneth De Author Korn, Dieter text Acta Palaeontologica Polonica 2016 2016-01-18 61 1 1 14 http://dx.doi.org/10.4202/app.00220.2015 journal article 10.4202/app.00220.2015 1732-2421 10626349 Genus Calygirtyoceras Korn, Klug, and Mapes, 1999 Type species : Calygirtyoceras darkaouaense Korn, Klug, and Mapes, 1999 , see below.