Staminate inflorescences with in situ pollen from Eocene Baltic amber reveal high diversity in Fagaceae (oak family)

Abstract

Staminate inflorescences with in situ pollen from Eocene Baltic amber reveal high diversity in Fagaceae (oak family)

The first extinct species of <i>Acritus</i> LeConte, 1853 (Histeridae: Abraeinae) from Eocene Baltic amber: a microscopic beetle inclusion studied with X-ray micro-computed tomography

“…nov., is among the smallest beetles described from Baltic amber. It ranks second (after the aforementioned ptiliid Micridium), together with an antlike stone beetle Semnodioceras halticaeforme Schaufuss, 1890. Resin trapping may be biased toward certain organisms, and amber inclusions tend to be dominated by small forms (Martínez-Delclòs et al, 2004). The upper limit of animal size in amber inclusions is apparently determined by the maximum production of the resiniferous tree (i.e.…”

“…Middle-Late Eocene, 48-34 Ma (Seyfullah et al, 2018;Bukejs et al, 2019;Kasiński et al, 2020;Sadowski et al, 2017Sadowski et al, , 2020.…”

A new enigmatic lineage of Dascillidae (Coleoptera: Elateriformia) from Eocene Baltic amber described using X-ray microtomography, with notes on Karumiinae morphology and classification

“…Mid-late Eocene, 48-34 Ma (Seyfullah et al, 2018;Bukejs et al, 2019;Kasiński et al, 2020;Sadowski et al, 2017Sadowski et al, , 2020.…”

New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications

“…Lobatae. In the latter case, the biogeographic relationships of this taxon would entirely change (see, for example, Denk et al, 2017a;Sadowski et al, 2020).…”

“…However, when exploring the evolutionary history of Fagaceae, the taxonomic resolution offered by light microscopy has not generally been sufficient to distinguish between modern genera of Fagaceae and extinct groups (e.g., Denk et al, 2012;Bouchal et al, 2014;Prader et al, 2020). Reliable taxonomic assessment and comparative investigation of modern and fossil pollen grains is possible only when adding electron microscopy to the conventional light microscopy investigation (Solomon, 1983a(Solomon, , 1983bMakino et al, 2009;Denk and Grimm, 2009a;Denk and Tekleva, 2014;Sadowski et al, 2020).…”