Fossil age data and molecular sequences are increasingly combined to establish a
timescale for the Tree of Life. Arthropods, as the most species-rich and morphologically …

Chelicerata probably appeared during the Cambrian period. Their precise origins remain
unclear, but may lie among the so-called great appendage arthropods. By the late Cambrian …

This book provides a modern, synthetic overview of interactions between insects and their
environments from a physiological perspective that integrates information across a range of …

Horseshoe crabs (Xiphosura) are traditionally regarded as sister group to the clade of
terrestrial chelicerates (Arachnida). This hypothesis has been challenged by recent …

Chelicerata represents one of the oldest groups of arthropods, with a fossil record extending
to the Cambrian, and is sister group to the remaining extant arthropods, the mandibulates …

Deciphering the evolutionary relationships of Chelicerata (arachnids, horseshoe crabs, and
allied taxa) has proven notoriously difficult, due to their ancient rapid radiation and the …

Bivalve classification has suffered in the past from the crossed‐purpose discussions among
paleontologists and neontologists, and many have based their proposals on single …

Morphological evidence for resolving relationships among arachnid orders was surveyed
and assembled in a matrix comprising 59 euchelicerate genera (41 extant, 18 fossil) and …

Lagynochthonius fragilis n. sp. is described from a limestone cave in the Hong Chong karst
of Kien Giang Province, southern Vietnam, which is currently threatened by quarrying …

Arachnida is an ancient, diverse and ecologically important animal group that contains a
number of species of interest for medical, agricultural and engineering applications. Despite …