The fossil record allows a unique glimpse into the evolutionary history of organisms living on
Earth today. We discovered a specimen of the stem group ant† Gerontoformica gracilis …

It is generally assumed that Cretaceous stem ants were obligately eusocial, because of the
presence of wingless adult females, yet the available evidence is ambiguous. Here, we …

Fossils provide unique opportunity to understand the tempo and mode of evolution and are
essential for modeling the history of lineage diversification. Here, we interrogate the …

This is a supplement to the Burmese (Myanmar) amber checklist and bibliography covering
taxa described or recorded during 2021, plus a few earlier records that were missed …

Myrmecophily is a phenomenon of the symbiosis of organisms that depend on various ant
(Formicidae) societies. Such interspecies associations are found in several unrelated …

Phloeocharis Mannerheim is the largest genus within the problematic rove beetle subfamily
Phloeocharinae, with a single extinct and 44 recent species recorded from the Holarctic …

Land snails in mid-Cretaceous Burmese amber (ca. 99–98 Ma) have attracted great interest
from paleontologists in recent years. Here we describe a new species of the genus …

Trichophyinae is one of the smallest subfamilies of the megadiverse rove-beetle family
Staphylinidae, with only 18 species in the single extant genus Trichophya Mannerheim …

The fossil record of stag beetles (Lucanidae), especially in Mesozoic amber, is sparse. Four
additional fossil lucanids preserved in mid-Cretaceous Kachin amber from northern …

Eleusinini is the smallest osoriine tribe, consisting of 221 species in three genera. No fossil
Eleusinini has been found until now. Here, I describe the first extinct representative of …