Agnostida is an order of arthropod which first developed near the end of the Early Cambrian period and thrived during the Middle Cambrian. They are present in the Lower Cambrian fossil record along with trilobites from the Redlichiida, Corynexochida, and Ptychopariida orders. The last agnostids went extinct in the Late Ordovician.
Mickwitziids are a Cambrian group of shelly fossils with originally phosphatic valves, belonging to the Brachiopod stem group, and exemplified by the genus Mickwitzia – the other genera are Heliomedusa and Setatella. The family Mickwitziidae is
Cotyledion tylodes is an extinct, stalked filter-feeder known from the Chengjiang lagerstatten. The living animal reached a couple of centimetres in height, and bore a loose scleritome of ovoid sclerites. Its interpretation has been controversial, and it
Nektaspida is an extinct order of soft-bodied arthropods proposed by Raymond in 1920; its taxonomic status is uncertain. Specimens are known from the early Cambrian to the upper Silurian periods. A Russian find in the Vendian of the White Sea (=Ediacaran
Vendoconularia is a genus of Ediacaran organism consisting of a hexagonal cone, which is thought to have housed a tentaculate organism. Three longitudinal bands are interspersed between the six sides of the cone. The discovery of vendoconulariids in
Paleochiton is an extinct genus of polyplacophoran molluscs
The Lower-Middle Cambrian animal Rhabdotubus is the earliest known pterobranch. It bears strong similarity to the graptolites - indeed for some time it was misclassified as a dendroid graptolite
Pollingeria is a problematic genus of animals of the Middle Cambrian Burgess Shale. 3080 specimens of Pollingeria are known from the Greater Phyllopod bed, where they comprise 5.85% of the community
Maturin Ponds Formation
The Maturin Ponds Formation is a formation cropping out in Newfoundland, comprising red arkose sandstones and siltstones
Ingta Formation
The Ingta Formation is a geological unit containing green sandstones and shales; it crops out in the Canadian Mackenzie Mountains. Its age is poorly constrained, though it straddles the Precambrian/Cambrian boundary. Below the boundary its ichnofauna
Wachendorfia paniculata
Wachendorfia paniculata is a species of plant of 10–90 cm (3.9–35.4 in) high, that emerges during the winter from an underground rootstock, with entire, sword-shaped, mostly hairy, line- to lance-shaped, straight or sickle-shaped leaves, set in a