Ancestral morphology of crown-group molluscs revealed by a new Ordovician stem aculiferan
Vinther, J.; Parry, L.; Briggs, D.E.G.; Van Roy, P. (2017). Ancestral morphology of crown-group molluscs revealed by a new Ordovician stem aculiferan. Nature (Lond.) 542(7642): 471-474. http://dx.doi.org/10.1038/nature21055
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687
Presence of a radula in Calvapilosa kroegeri confirms the molluscan affinity of sachitids, and the single shell plate reveals the ancestral condition for all crown molluscs and early evolution of the multi-plated body plan characteristic of Aculifera.
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