Extended Data Fig. 1: Curation of lncRNAs.

a, RNA-seq data collected for lncRNA annotation. In total, more than 12 billion sequencing reads were collected for six vertebrates. b, Pipeline for lncRNA curation. c, Venn diagram showing the overlap of curated lncRNAs of the six species in this study with annotated lncRNAs from the indicated sources. d, Heatmaps showing the overlap scores among curated lncRNAs of the six species in this study and annotated lncRNAs from other indicated sources. e, Comparison of the number of lncRNA genes in our study vs. previously reported lncRNA datasets. f, The number of genes and the distribution of number of exons, lengths, and expression levels of protein-coding genes and lncRNAs curated in this study. Boxes, IQR. Centre lines, median. Whiskers, values within 1.5 × IQR of the top and bottom quartiles.