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Linearized phylogenetic tree for SPARC and SPARCL1. Figures at the nodes show divergence time based on PC distance, γ distance, and their average from the top. The γ parameter was estimated: α = 1.20. Standard errors are shown for the divergence of SPARC and SPARCL1. The calibration point was set 1,177 mya at the divergence of nematodes and chordates.
