Arthropods are the most diverse group of animals and have been so since the Cambrian
radiation. They belong to the protostome clade Ecdysozoa, with Onychophora (velvet …

Understanding the head is one of the great challenges in the fields of comparative anatomy,
developmental biology, and palaeontology of arthropods. Numerous conflicting views and …

Arthropods were the first animals to conquer land and air. They encompass more than three
quarters of all described living species. This extraordinary evolutionary success is based on …

Long-branch attraction is a systematic artifact that results in erroneous groupings of fast-
evolving taxa. The combination of short, deep internodes in tandem with long-branch …

Ecdysozoa is a clade composed of eight phyla: the arthropods, tardigrades and
onychophorans that share segmentation and appendages and the nematodes …

Monophyly of Arthropoda is emphatically supported from both morphological and molecular
perspectives. Recent work finds Onychophora rather than Tardigrada to be the closest …

A remarkable new fossil horseshoe crab, Lunataspis aurora gen. et sp. nov., from recently
discovered Upper Ordovician (c. 445 Ma) shallow marine Konservat‐Lagerstätten deposits …

Summary The superphylum Panarthropoda (Arthropoda, Onychophora, and Tardigrada)
exhibits a remarkable diversity of segment morphologies, enabling these animals to occupy …

Despite significant advances in invertebrate phylogenomics over the past decade, the
higher-level phylogeny of Pycnogonida (sea spiders) remains elusive. Due to the …

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