Abstract The Cambrian Explosion by nature is a three-phased explosion of animal body
plans alongside episodic biomineralization, pulsed change of generic diversity, body size …

One of the most widespread and diverse animal groups of the Cambrian Explosion is a
clade of stem lineage arthropods known as Radiodonta, which lived exclusively in the early …

In addition to being among the most iconic and bizarre-looking Cambrian animals,
radiodonts are a group that offers key insight into the acquisition of the arthropod body plan …

The rise of arthropods is a decisive event in the history of life. Likely the first animals to have
established themselves on land and in the air, arthropods have pervaded nearly all …

A widely (although not universally) accepted model of arthropod head evolution postulates
that the labrum, a structure seen in almost all living euarthropods, evolved from an anterior …

Climatic and environmental conditions play a pivotal role in the evolution of the biosphere,
serving as the primary natural factors influencing biological evolution and the development …

Panarthropoda, the clade comprising the phyla Onychophora, Tardigrada and
Euarthropoda, encompasses the largest majority of animal biodiversity. The relationships …

The anterior-most unit of the crown-group arthropod body plan includes three segments, the
pre-gnathal segments, that contain three neuromeres that together comprise the brain …

Phylum Tardigrada (water bears), well known for their cryptobiosis, includes small
invertebrates with four paired limbs and is divided into two classes: Eutardigrada and …

A crucial step in the evolution of Euarthropoda (chelicerates, myriapods, pancrustaceans)
was the transition between fossil groups that possessed frontal appendages innervated by …