Nimchacystis agterbosi

Nimchacystis (dand nimcha, a curved Moroccan sword, in reference to the shape of the dististele, and the suffix - cystis from ancient Greek meaning "bag".).

Nimchacystis belongs to the Solute, an extinct class of primitive echinoderms, which lived from the Middle Cambrian to the Early Devonian. The class is also known by its junior synonym Homoiostelea. Soluta is one of the four "carpoid" classes, along with Ctenocystoidea, Cincta and Stylophora, which made up the obsolete subphylum Homalozoa.

The Soluta have a flattened teak strongly asymmetrical composed of small plates. Its exclusive characteristic is the presence of two appendages arranged one at each end of the teak:

• classroomcophore (tail type).
•  The other is exclusive to homoiosteles; is short and it is located in the anterior part, and has a groove on its underside interpreted as a food structure. They presented benthic life feeding of organic particles from the marine sediment, capturing them with its feeding appendage.

The Fezouata deposits, near the Moroccan city of Zagora, are providing a rich sample of a fauna similar, although later in time, to the famous Burgess Shale (Canada). We are talking about fossils between 480 and 472 million years old. The age indicates that the Burgess Shale type communities were not restricted, as was believed, to the early stages of the Cambrian and then suddenly disappeared, but rather they survived much longer, coexisted with the later fauna and would be the normal type of deep sea fauna throughout the planet. So Morocco was an ocean and was over the South Pole.