(en) Kenneth M. Halanych, Matthias Bernt, Johanna T. Cannon, Michael G. Tassia, Kevin M. Kocot et Yuanning Li, « Mitogenomics Reveals a Novel Genetic Code in Hemichordata », Genome Biology and Evolution, vol. 11, no 1, , p. 29–40 (PMID30476024, PMCID6319601, DOI10.1093/gbe/evy254)
Jörg Maletz, « The classification of the Pterobranchia (Cephalodiscida and Graptolithina) », Bulletin of Geosciences, vol. 89, no 3, , p. 477–540 (ISSN1214-1119, DOI10.3140/bull.geosci.1465)
Jörg Maletz, « The classification of the Pterobranchia (Cephalodiscida and Graptolithina) », Bulletin of Geosciences, vol. 89, no 3, , p. 477–540 (ISSN1214-1119, DOI10.3140/bull.geosci.1465)
(en) Kenneth M. Halanych, Matthias Bernt, Johanna T. Cannon, Michael G. Tassia, Kevin M. Kocot et Yuanning Li, « Mitogenomics Reveals a Novel Genetic Code in Hemichordata », Genome Biology and Evolution, vol. 11, no 1, , p. 29–40 (PMID30476024, PMCID6319601, DOI10.1093/gbe/evy254)