“…The Apoidea diversified mainly during the Cretaceous, and most of the living families were already established by the end of the Early Cretaceous and the beginning of the Late Cretaceous (Branstetter et al, 2017;Peters et al, 2017;Sann et al, 2018;Rosa & Melo, 2021;Rosa & Melo, unpublished data). Even with this evident diversity of taxa during the period, most apoid wasp fossils from the Cretaceous have been traditionally described in a single family, †Angarosphecidae Rasnitsyn (Melo & Rosa, 2018;Rasnitsyn, 1975;Rasnitsyn et al, 1998Rasnitsyn et al, , 1999Zhang et al, 2018;Zheng et al, 2021). This family was proposed based on the lacustrine fossil †Angarosphex myrmicopterus Rasnitsyn from the Aptian Lagerstätte Baissa, Zaza Formation, Transbaikalia, in Russia (Rasnitsyn, 1975).…”