The origin of plants and their colonization of land fundamentally transformed the terrestrial
environment. Here we elucidate the basis of this formative episode in Earth history through …

Comprising about 82% of the extant fern species diversity, Polypodiales are generally
believed to have diversified in the Late Cretaceous. We estimated the divergence times of …

Ferns are the second largest clade of vascular plants with over 10,000 species, yet the
generation of genomic resources for the group has lagged behind other major clades of …

Abstract The Khasurty locality (Lower Cretaceous of Transbaikalia, Russia) is one of the
largest fossil insect sites in the region. Over the entire period of study, more than 6000 insect …

Dennstaedtiaceae has 270 species, a worldwide distribution, and an edge-colonizing habit
that is unusual among ferns. Aneuploidy, polyploidy, and hybrids are common in the family …

Selaginella (Selaginellales, Selaginellaceae) is the most speciose genus of lycophytes and,
with approximately 750 recognized present-day species, also one of the largest genera of …

Hybridization has long been recognized as common in ferns, but the products of this
arguably evolutionary important process have often been ignored in classifications. For …

Divergence time estimates based on DNA sequence variation of extant species suggest that
eupolypod ferns were diverse already in the Cretaceous; however, fossil evidence to …

The fossil fern species Cretacifilix fungiformis from mid-Cretaceous Kachin amber from
Myanmar was previously assigned to eupolypod ferns for having sporangia with a vertical …

An unusual tree fern trapped in mid-Cretaceous Myanmar amber is described as
Thyrsopteris cretacea sp. nov.(Thyrsopteridaceae). The fossil most resembles T. elegans, a …