Evolutionary rates and evolutionary trends in Carboniferous and Permian ammonoids
Final Report Abstract
Although the main focus of the project is the Carboniferous and Permian ammonoids it is only right to include ammonoids from other periods in order to place changes in the Carboniferous and Permian into perspective. The research carried out in the following three projects has highlighted repetition in ammonoid evolutionary history not only in terms of adult morphology but also with relation to the ontogenetic development of the conch leading to the adult morphology. The ammonoid conch was interacting with the marine environment and therefore its form was shaped by various influencing factors. Iteration of conch forms between different groups as shown in this report is suggestive of repeating ecological conditions not only affecting the adults but also controlling the development of the ammonoid from hatching onwards.
Publications
- (2013): Extinction Space - a method for the quantification and classification of changes in morphospace across extinction boundaries. – Evolution 67 (10): 2795-2810
Korn, D., Hopkins, M.J. & Walton, S.A.
(See online at https://doi.org/10.1111/evo.12162) - (2013): The ontogenetic development of apertural surface areas in the Ammonoidea: exploring the interface between the environment and the dimension of the body chamber. – 57th Palaeontological Association Annual Meeting, 13-16 December 2013, University of Zurich, Switzerland. Programme and Abstracts: 92
Walton, S.A. & Korn, D.
- (2014): Changing morphospace occupation of the Ammonoidea from the Devonian to the Jurassic. – 58th Palaeontological Association Annual Meeting, 16-19 December 2014, University of Leeds. Programme and Abstracts: 102
Walton, S.A. & Korn, D.
- (2014): Iterative ontogenetic development of ammonoid conch shapes from the Devonian through to the Jurassic. – 9th International Symposium Cephalopods ‒ Present and Past in combination with the 5th International Symposium Coleoid Cephalopods through Time, Zürich 2014: 91
Walton, S.A. & Korn, D.
- (2015): Taxonomic Diversity and Morphological Disparity of Paleozoic Ammonoids. – In: Ammonoid Paleobiology: From macroevolution to paleogeography, Topics In Geobiology, 44: Klug, C., Korn, D., De Baets, K., Kruta, I., Mapes, R. H. (Eds.): 429-462; Springer
Korn, D., Walton, S.A. & Klug, C.
