Fossil Record 17(1): 1-32, doi: 10.5194/fr-17-1-2014
A morphometric approach to conch ontogeny of Cymaclymenia and related genera (Ammonoidea, Late Devonian)
expand article infoC. Klein, D. Korn§
‡ Museum für Naturkunde Berlin, Invalidenstraße 43, 10115 Berlin, Germany§ Institut des Sciences de l'Evolution, Université Montpellier II, 34095 Montpellier, France
Open Access
Abstract
Representatives of the Late Devonian ammonoid family Cymaclymeniidae werestudied for their conch ontogeny. Two methods were applied: (1) the analysisof classical morphometric conch parameters and (2) an outline analysis ofthe aperture using elliptic Fourier analysis. Application of both methodsleads to similar results, allowing a separation of some of the species bymeans of their ontogenetic pathways. The new species Procymaclymenia ebbighausenin. sp., Cymaclymenia subvexa n. sp.,Cymaclymenia formosa n. sp., Cymaclymenia lambidia n. sp.,Cymaclymenia carnata n. sp., Cymaclymenia aulax n. sp.,Cymaclymenia serotina n. sp. and Postclymenia calceola n. sp. are described in thesystematic part.