Skip to content Skip to navigation

Article: Cladistic analysis of Albian heteromorph ammonites

Publication: Palaeontology
Volume: 42
Part: 5
Publication Date: October 1999
Page(s): 907 925
Author(s): Neale Monks
Addition Information

How to Cite

MONKS, N. 1999. Cladistic analysis of Albian heteromorph ammonites. Palaeontology42, 5, 907–925.

Online Version Hosted By

Wiley Online Library
Get Article: Wiley Online Library [Pay-to-View Access] |


A computer-based parsimony analysis of Albian heteromorph ammonites from the Tethyan and European faunal provinces is demonstrated. The results indicate that whilst Anisoceratidae, Baculitidae, Scaphitidae and Turrilitidae are monophyletic, Hamitidae is not. Previous studies of ammonite phylogenetics have used the coiling mode, ornamentation of the shell and the suture line as sources of characters. Comparison of the consistency and retention indices of these character suites indicates that whereas ornamentation is relatively consistent within clades, suture line morphology is highly homoplastic. The earliest known Sciponoceras, S. skipperae sp. nov., is described.
PalAss Go! URL: | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+