In the last decade and a half, advances in genetic sequencing technologies have
revolutionized systematics, transforming the field from studying morphological characters or …

Life originated in anoxia, but many organisms came to depend upon oxygen for survival,
independently evolving diverse respiratory systems for acquiring oxygen from the …

We present a phylogenetic analysis of spiders using a dataset of 932 spider species,
representing 115 families (only the family Synaphridae is unrepresented), 700 known …

ABSTRACT Spiders (Order Araneae) are massively abundant generalist arthropod
predators that are found in nearly every ecosystem on the planet and have persisted for over …

ABSTRACT A phylogenetic analysis of the two-clawed spiders grouped in Dionycha is
presented, with 166 representative species of 49 araneomorph families, scored for 393 …

We describe a simple protocol for digesting the internal soft tissues of spiders using an
enzyme complex known as pancreatin. This technique is preferred over digestions with …

El libro tiene una estructura tan simple como su título. Tras unos capítulos iniciales
introductorios, siguen los de claves de identificación y 107 subcapítulos dedicados cada …

Incorporation of fossils into biogeographic studies can have a profound effect on the
conclusions that result, particularly when fossil ranges are nonoverlap** with extant …

Background The major islands of the Western Mediterranean--Corsica, Sardinia, and the
Balearic Islands--are continental terrenes that drifted towards their present day location …

Phylonyms is an implementation of PhyloCode, which is a set of principles, rules, and
recommendations governing phylogenetic nomenclature. Nearly 300 clades-lineages of …