Armatusite

Armatusite is a clade of radial-symmetric animals found in the oceans of Rilloria. Members of this clade date back to 2 Billion or so years ago. One of the earliest examples of this clade is Armatus folio, a filter feeding, sessile, soft bodied, creature found in shallow benthic environments. This particular species has long since gone extinct. But impressions have been in shale deposits dated to this time.