Acercostraca

Superregnum: Eukaryota
Cladus: Amorphea
Cladus: Obazoa
Cladus: Opisthokonta
Cladus: Holozoa
Cladus: Filozoa
Cladus: Choanozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: ParaHoxozoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Superphylum: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: incertae sedis
Classis: †Marrellomorpha
Ordo: †Acercostraca
Familiae: †Vachonisiidae
Genera: †Enosiaspis – †Vachonisia – †Xylokorys – ?†Primicaris – ?†Skania

Acercostraca Lehmann, 1955

• Lehmann, W.M. 1955. Vachonia rogeri n. g. n. sp. ein Branchiopod aus dem unterdevonischen Hunsrückschiefer. Palaeontologische Zeitschrift 29(3–4): 126–130. DOI: 10.1007/bf03041794 . [as subclass of Branchiopoda]

• Legg, D.A. 2016. An acercostracan marrellomorph (Euarthropoda) from the Lower Ordovician of Morocco. The Science of Nature 103: 21. DOI: 10.1007/s00114-016-1352-5 .
• Moysiuk, J., Izquierdo-López, A., Kampouris, G.E. & Caron, J.-B. 2022. A new marrellomorph arthropod from southern Ontario: a rare case of soft-tissue preservation on a Late Ordovician open marine shelf. Journal of Paleontology 96(4): 859–874. DOI: 10.1017/jpa.2022.11 . Reference page.