Biomineralized skeletons are widespread in animals, and their origins can be traced to the
latest Ediacaran or early Cambrian fossil record, in virtually all animal groups. The origin of …

The most up-to-date book on invertebrates, providing a new framework for understanding
their place in the tree of life In The Invertebrate Tree of Life, Gonzalo Giribet and Gregory …

Chancelloriids are a group of 'problematic'fossils characterized by bag-shaped body
equipped with mineralized sclerites on the external surface. Among the chancelloriid taxa …

As extinct animals that flourished during the Cambrian explosion, chancelloriids have a
unique body plan lacking guts but with a flexible integument and a suite of star-shaped …

Genic and genomic data have been resha** our understanding of the earliest radiation
event of metazoans, the well-known Cambrian Evolutionary Radiation, not only from the …

The protomonaxonid sponges are a controversial early group with supposed ties to the
demosponges, but the group also possesses features that imply a much earlier-branching …

Diverse chancelloriids from two sections of the Kaili Biota (Cambrian Wuliuan Stage) in
Guizhou Province, China, are systematically described. A total of 25 complete individuals …

Chancelloriids are a poorly understood group of phylogenetically problematic Cambrian
metazoans; complete specimens show they were sessile, radially symmetrical, club‐shaped …

Chancelloria australilonga sp. nov. is described from the Emu Bay Shale (Cambrian Series
2, Stage 4) of Kangaroo Island, South Australia. The new species has a typical sac-like …

Chancelloriids are an enigmatic group of Cambrian animals characterized by radially
symmetrical bodies equipped with spiny sclerites. Although they were major components of …