CyrtospiriferidaeW
Cyrtospiriferidae

Cyrtospiriferidae is an extinct family of Brachiopods.

FenestellidaeW
Fenestellidae

Fenestellidae is a family of Bryozoans belonging to the order Fenestrida. The skeleton of its colonies consists of stiff branches that are interconnected by narrower crossbars. The individuals of the colony inhabit one side of the branches in two parallel rows or two at the branch base and three or more rows further up. Zooids can be recognized as small rimmed pores, and in well-preserved specimens the apertures are closed by centrally perforated lids. The front of the branches carries small nodes in a row or zigzag line between the apertures. Branches split from time to time giving the colonies a fan-shape or, in the genus Archimedes, create an mesh in the shape of an Archimedes screw.

HeterotrypidaeW
Heterotrypidae

Heterotrypidae is an extinct bryozoan family in the order Trepostomata.

LuolishaniidaeW
Luolishaniidae

The Luolishaniidae or Luolishaniida are a group of lobopodians with setiferous forelimbs known from the Cambrian period. The presence of thorn-shaped sclerites arranged as three per segment is diagnostic. The type genus is based on Luolishania longicruris Hou and Chen, 1989, from the Chengjiang Lagerstatte, South China. They are presumed to have been filter feeders. New specimens of the previously engimatic Facivermis show that it was a sessile tube-dweller, and part of this group.

PlaesiomyidaeW
Plaesiomyidae

Plaesiomyidae is a family of extinct lamp shells belonging to the order Orthida.

PrionorhynchiidaeW
Prionorhynchiidae

Prionorhynchiidae is an extinct family of brachiopods belonging to the order Rhynchonellida.

PygopidaeW
Pygopidae

Pygopidae is an extinct family of Brachiopods.

TerebratellidaeW
Terebratellidae

Terebratellidae is an extant family of brachiopods with a fossil record dating back to the Jurassic.

TerebratulidaeW
Terebratulidae

Terebratulidae is a family of brachiopods with a fossil record dating back to the Late Devonian. It is subdivided into 11 subfamilies.

TrigonotretidaeW
Trigonotretidae

Trigonotretidae is an extinct family of articulate brachiopods belonging to the order Spiriferida.

UncitidaeW
Uncitidae

Uncitidae is an extinct family of brachiopods.