The Khasurty Fossil Insect Lagerstätte

Evolution and systematics of the Aculeata and kin (Hymenoptera), with emphasis on the ants (Formicoidea: †@@@idae fam. nov., Formicidae)

“…The next geological interval, that of the Aptian Age , includes several more putative Scoliidae, definitive Vespidae ( †Curiosivespa Rasnitsyn, 1975, †Priorvespa Carpenter & Rasnitsyn, 1990, putative Tiphiidae ( †Architiphia Darling, 1990 in Darling & Sharkey 1990), putative Sapygidae ( †Cretofedtschenkia Osten, 2007), and a potential crown ant based on our present analyses ( †Cariridris Brandão & Martins-Neto, 1990, see also Ohl 2004). These Aptian fossils have been recovered from several localities, most notably the Laiyang (e.g., Zhou et al 2020), Yixian (e.g., Chang et al 2017), Khurilt (= Dzun-Bain, Kopylov et al 2020), and Crato Formations (e.g., Martill et al 2009). No other first appearances of vespiform Aculeata occurs before the Kachin amber deposit, although definitive stem Formicidae are recovered from the late Albian Charentese and Baikura Formations, including the unplaceable male-based genus †Baikuris Dlussky, 1987, the sphecomyrmine †Gerontoformica cretacica Nel & Perrault, 2004, and the haidomyrmecine †Haidomyrmodes mammuthus Perrichot et al, 2008. Undoubtedly the most important fossil deposit for understanding the paleodiversity of the Aculeata is that of the mid Cretaceous Kachin (Burmese) amber (~ 99 Mya: Shi et al 2012, Mao et al 2018; see also Balashov 2021).…”

Including fossils in phylogeny: a glimpse into the evolution of the superfamily Evanioidea (Hymenoptera: Apocrita) under tip-dating and the fossilized birth–death process

“…Although diversity changes through time as estimated by this analysis are biased by the incompleteness of the fossil record, we could extract one general pattern showing that Evanioidea were already diversified in the Jurassic period with more than 70 species (Fig. 7), while the earliest record of Ichneumonoidea (Cretobraconus maculatus Rasnitsyn & Sharkey, 1988) was described from the Lower Cretaceous Ulugei Formation (Rasnitsyn & Sharkey, 1988;Kopylov et al, 2020).…”

“…The evanioids flourished during the Jurassic while no ichneumonoids are known during this period. During the Early Cretaceous the proportion of evanioids and ichneumonoids varies and depends on the deposits: in the Khasurty deposits (Transbaikalian) the abundance of both superfamilies are similar (Kopylov et al, 2020), while the evanioids prevail in the Gurvan-Eren Formation (western Mongolia: Rasnitsyn, 1990a). On the contrary the ichneumonoids are more diverse in the Bon-Tsagan deposits (Mongolia: Rasnitsyn, 1980b).…”

<p class="ZootaxaTitle">All genera of the world: Order †Lophioneurida—fossil out-groups of Thripida (Animalia: Arthropoda: Insecta)

“…The present compilation includes a total of 22 names, comprising 18 accepted genera, 4 synonyms and one invalid homonym. Research by Shmakov (in Kopylov et al 2020Kopylov et al , p. 1258, however, predicts further new lophioneurid taxa of generic rank, closest to the genus Undensis Vishnyakova. Systematic relationships between the genera can hardly be deduced, with 11 of the genera each comprising a single species, and only one genus showing any kind of diversity (Zoropsocus: 16 species).…”