Skip to content Skip to navigation

Article: The origin of multiplacophorans – convergent evolution in Aculiferan molluscs

Publication: Palaeontology
Volume: 55
Part: 5
Publication Date: September 2012
Page(s): 1007 1019
Author(s): Jakob Vinther, Peter Jell, George Kampouris, Ryan Carney, Rachel A. Racicot and Derek E. G. Briggs
Addition Information

How to Cite

VINTHER, J., JELL, P., KAMPOURIS, G., CARNEY, R., RACICOT, R. A., BRIGGS, D. E. G. 2012. The origin of multiplacophorans – convergent evolution in Aculiferan molluscs. Palaeontology55, 5, 1007–1019.

Online Version Hosted By

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


Multiplacophorans are Palaeozoic (Silurian to Permian) stem group polyplacophorans with 17 shell plates in a particular arrangement of single terminal plates separated by three columns of plates forming five transverse rows. Their distinctive morphology has prompted disparate interpretations of their relationship to polyplacophorans. Some features are strikingly similar to crown group polyplacophorans and even to some living families. Here we describe two Devonian forms, Protobalanus spinicoronatus sp. nov., a hercolepadid from northeast Ohio, USA, and Hannestheronia australis gen. et sp. nov., a strobilepid from South Africa. Using the results from a Bayesian relaxed molecular clock to test competing scenarios of the relationship of multiplacophorans to crown group polyplacophorans, we demonstrate that multiplacophorans are stem group polyplacophorans in which certain characters of the crown group evolved convergently.
PalAss Go! URL: | Twitter: Share on Twitter | Facebook: Share on Facebook | Google+: Share on Google+