The origin and diversification of pteropods predate past perturbations in the Earth's carbon cycle (Q5883): Difference between revisions

This study examines the taxonomy of pteropods and their divergence time using phylogenomics byincorporating 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. Thisdatasets includes the following files: pteropods_May18_s7.cali: fossil calibrations used for molecular dating Concat-Ptero200.phy.gz: reduced alignment with 200 marker genes showing highest support Concat-Ptero040317.phy.gz: main alignment of2654 marker genes OMA-alis.tgz: individual alignments for each marker gene Ptero200_PBcatgtr.tgz: phylobayes run files on the reduced 200 genes dataset Ptero040317_examl.tgz: examlrun files on the main 2654 markers alignment pteropods_May18_s7_cir_sb_bd.tgzz: phylobayes molecular dating run with log-normal model pteropods_May18_s7_ugam_sb_bd.tgz: phylobayes molecular dating run with UGALMmodel