We have tested two contrasting hypotheses: i) these individuals belong to a size class prone to underreporting or not being observed, and ii) these individuals are a fraction of bycatch from varying size classes that accidentally ended up in the wells. Distinguishing between these hypotheses is ...
A methodological gap remains when addressing the evolutionary history of extant clades for which phylogenetic frameworks including fossil taxa are lacking, as is the case for many clades, especially at lower taxonomic levels. The fossil record of some groups displays anatomical features allowing the bui...