@ARTICLE{TreeBASE2Ref19718,
author = {jakob vinther and Erik Anders sperling and Derek E.G. Briggs and Kevin J Peterson},
title = {A molecular paleobiological hypothesis to the origin of aplacophorans and their derivation from chiton-like ancestors},
year = {2011},
keywords = {},
doi = {},
url = {http://},
pmid = {},
journal = {Proceedings of the Royal Society B},
volume = {},
number = {},
pages = {},
abstract = {Aplacophorans and polyplacophorans (chitons) have long been argued to be basal molluscs. We present a molecular phylogeny including the aplacophorans Neomeniomorpha (Solenogastres) and Chaetodermomorpha (Caudofoveata). Our analysis recovered instead the clade Aculifera (Aplacophora + Polyplacophora). A relaxed Bayesian molecular clock estimates an Early Ordovician appearance of the aculiferan crown group. This is consistent with the presence of chiton-like molluscs (paleoloricates) with seven or eight dorsal shell plates, interpreted to be ancestral to both chitons and aplacophorans, in the Late Cambrian (~501-490 million years ago). Molecular, embryological and palaeontological data indicate that the aplacophorans evolved from chiton-like ancestors. The recovery of cephalopods as a sistergroup to aculiferans suggests that the plesiomorphic condition in molluscs might be a morphology similar to monoplacophoran limpets. }
}
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Citation title: "A molecular paleobiological hypothesis to the origin of aplacophorans and their derivation from chiton-like ancestors".
