Pterobranchia

Superregnum: Eukaryota
Cladus: Amorphea
Cladus: Obazoa
Cladus: Opisthokonta
Cladus: Holozoa
Cladus: Filozoa
Cladus: Choanozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: ParaHoxozoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Hemichordata
Classis: Pterobranchia
Ordines: Cephalodiscida – Graptolithina
[source: Maletz (2014)]

Ordines (Old): Cephalodiscida – Rhabdopleurida

Pterobranchia Lankester, 1877

• Graptolithoidea Beklemishev, 1951

• Maletz, J. 2014. The classification of the Pterobranchia (Cephalodiscida and Graptolithina). Bulletin of Geosciences 89(3): 477–540. DOI: 10.3140/bull.geosci.1465
• Mitchell, C.E., Melchin, M.J., Cameron, C.B. & Maletz, J. 2013. Phylogenetic analysis reveals that Rhabdopleura is an extant graptolite. Lethaia 46(1): 34–56. DOI: 10.1111/j.1502-3931.2012.00319.x . Reference page. 

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