BioMed Research International / 2013 / Article / Tab 2

Research Article

The Continuing Debate on Deep Molluscan Phylogeny: Evidence for Serialia (Mollusca, Monoplacophora + Polyplacophora)

Table 2

Sensitivity tests of individual calibration nodes used for relaxed molecular clock time estimates of major molluscan groups. Table shows influence of single calibration points on node ages of all other calibration points.

Excluded calibration point
NoneDiversification of MolluscaSplit Serialia/BivalviaOrigin of CephalopodaSplit Polyplacophora/MonoplacophoraOrigin of PteriomorphaOrigin of CaenogastropodaDiversification of ScaphopodaSplit Astarte/Cardita Diversification of Polyplacophora

Calibrated nodesDiversification of Mollusca551.02683.50 * 550.58549.76551.52551.55551.59551.68552.10551.72
Split Serialia/Bivalvia530.93533.98523.58 * 530.80530.88530.36530.82531.01530.82531.01
Origin of Cephalopoda504.92511.40504.40431.05 * 504.26504.85504.75503.96504.16504.35
Split Polyplacophora/Monoplacophora493.06493.44491.79493.68431.68 * 493.47493.13493.47493.79493.14
Origin of Pteriomorpha475.06474.81474.20474.43474.97376.65 * 474.56475.20474.16474.82
Origin of Caenogastropoda421.49422.82421.77421.91422.61421.54326.50 * 421.95420.85421.61
Diversification of Scaphopoda359.95360.02359.97359.55360.12359.59359.37382.50 * 359.19359.60
Split Astarte/Cardita 325.43325.40325.20324.98325.45324.55325.37325.0944.34 * 325.63
Diversification of Polyplacophora233.44233.49233.37233.18233.75233.42233.63233.57232.71243.67 *

Bold ages marked with an asterisk (*) indicate time estimations without calibration of this node.

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