. "P. larvaformis"@en . "Primicaris"@en . . . . . . . . . . "2634"^^ . . "Primicaris"@en . . . . "Primicaris is genus of Cambrian arthropod from the Chengjiang biota of China and the Burgess Shale of Canada. It contains a single described species, P. larvaformis. Its specimens were once thought to be meraspids of Naraoia spinosa. Its phylogenetic position has been described as \"problematic\". Some studies have suggested them to be marrellomorphs belonging to the subgroup Acerostraca."@en . . . "Animalia"@en . . . . . . "Zhang et al 2003"@en . . . . . . "Primicaris is genus of Cambrian arthropod from the Chengjiang biota of China and the Burgess Shale of Canada. It contains a single described species, P. larvaformis. Its specimens were once thought to be meraspids of Naraoia spinosa. Its phylogenetic position has been described as \"problematic\". Some studies have suggested them to be marrellomorphs belonging to the subgroup Acerostraca."@en . . . "Arthropoda"@en . . . "1108736040"^^ . . "21493185"^^ . . . . . . . . . . "Artist's reconstruction"@en . . .