Ordovician

Kataoua Formation

Mecissi, Anti-Atlas Mountains, Morocco

Large, mystery animal similar to Eldonia from the Burgess Shale.

Excellent 4.2 inch

Problematica, Paropsonomid.

There is no consensus on the relationships of this animal and others like it.  Are they cnidarians or relatives of early echinoderms?

See: Alessandrello, Anna, and Giacomo Bracchi. “Eldonia berbera n. sp., a new species of the enigmatic genus Eldonia Walcott, 1911 from the Rawtheyan (Upper Ordovician) of Anti-Atlas (Erfoud, Tafilalt, Morocco).” Atti della Società italiana di scienze naturali e del museo civico di storia naturale di Milano 144.2 (2003): 337-358.