Cyanobacteria are among the most ancient of evolutionary lineages, oxygenic
photosynthesizers that may have originated before 3.0 Ga, as evidenced by free oxygen …

Animal venoms are theorized to evolve under the significant influence of positive Darwinian
selection in a chemical arms race scenario, where the evolution of venom resistance in prey …

Larvae (metacercariae) in some species of Diplostomidae (Platyhelminthes: Digenea)
inhabit fish eyes and are difficult to identify to species based on morphology. DNA barcoding …

The Thaumarchaeota is an abundant and ubiquitous phylum of archaea that plays a major
role in the global nitrogen cycle. Previous analyses of the ammonia monooxygenase gene …

The characterization of evolutionary and biogeographical patterns is of fundamental
importance to identify factors driving biodiversity. Due to their widespread but discontinuous …

Metasequoia glyptostroboides Hu et Cheng is the only species in the genus Metasequoia
Miki ex Hu et Cheng, which belongs to the Cupressaceae family. There were around 10 …

Previous analyses of single diatom chloroplast protein-encoded genes recovered results
highly incongruent with both traditional phylogenies and phylogenies derived from the …

The Helicoidea is one of the most diverse superfamilies of terrestrial land snails. In this study
we present a molecular phylogeny of the western Palaearctic Helicoidea obtained by means …

The genus Rineloricaria is a Neotropical freshwater fish group with a long and problematic
taxonomic history, attributed to the large number of species and the pronounced similarity …

Background Acariformes is the most species-rich and morphologically diverse radiation of
chelicerate arthropods, known from the oldest terrestrial ecosystems. It is also a key lineage …