The origin and diversification of pteropods predate past perturbations in the Earth's carbon cycle

<p>This study examines the taxonomy of pteropods and their divergence time using phylogenomics by&nbsp;incorporating 21 new species and new fossil evidence. In agreement with traditional taxonomy, we recovered the first molecular support for a division between sea butterflies (Thecosomata) and sea angels (Gymnosomata). Molecular dating demonstrated that these two lineages diverged in the early Cretaceous, and that all main pteropod clades, including shelled, partially-shelled and unshelled groups, diverged in the mid to late Cretaceous. &nbsp;This&nbsp;datasets includes the following files:&nbsp;</p> <ul> <li>&#39;pteropods_May18_s7.cali&#39;: fossil calibrations used for molecular dating&nbsp;</li> <li>&#39;Concat-Ptero200.phy.gz&#39;: reduced alignment with 200 marker genes showing highest support</li> <li>&#39;Concat-Ptero040317.phy.gz&#39;: main alignment of&nbsp;2654 marker genes&nbsp;</li> <li>&#39;OMA-alis.tgz&#39;: individual alignments for each marker gene</li> <li>&#39;Ptero200_PBcatgtr.tgz&#39;: phylobayes run files on the reduced 200 genes dataset</li> <li>&#39;Ptero040317_examl.tgz&#39;: examl&nbsp;run files &nbsp;on the main 2654 markers alignment</li> <li>&#39;pteropods_May18_s7_cir_sb_bd.tgz&#39;z: phylobayes molecular dating run with log-normal model&nbsp;</li> <li>&#39;pteropods_May18_s7_ugam_sb_bd.tgz&#39;: phylobayes molecular dating run with UGALM&nbsp;model&nbsp;&nbsp;</li> </ul>