Lichens are symbiotic associations resulting from interactions among fungi (primary and
secondary mycobionts), algae and/or cyanobacteria (primary and secondary photobionts) …

In addition to answering Hutchinson's question “Why are there so many species?”, we need
to understand why certain species are found only under certain environmental conditions …

Carrasco, PA, Mattoni, CI, Leynaud, GC & Scrocchi, GJ (2012). Morphology, phylogeny and
taxonomy of South American bothropoid pitvipers (Serpentes, Viperidae).—Zoologica …

We redescribe the morphology of Yohoia tenuis (Chelicerata sensu lato) from the Cambrian
Burgess Shale Lagerstätte. The morphology of the most anterior, prominent, socalled great …

The systematics of Hypotricha is one of the most puzzling problems in ciliate biology, having
spanned numerous conflicting hypotheses with unstable relationships at various levels in …

The limits and the interfamilial relationships of the minute orbweaving symphytognathoid
spiders have remained contentious and poorly understood. The circumscription and …

A phylogenetic analysis of selected oestroid taxa based on 66 morphological traits and
sequences from three nuclear proteincoding genes (CAD, MAC, MCS) resolved the …

The morphology of paired fins is commonly overlooked in morphological studies, particularly
the pelvic girdle and fins. Consequently, previous phylogenetic studies incorporating …

The taxonomic delimitation of Vriesea is challenging because several diagnostic traits of the
genus are shared with other genera in Tillandsioideae. The genus has no unique …

As it spread through time and into distinct areas of science—from comparative anatomy to
evolutionary biology, cladistics, developmental and molecular biology—the homology …