Marine / biological journals in which papers dealing with Brachiopoda and Phoronida may have been published in Open Access with free reprints in pdf - some have respectable impacts factors over 1.

American Museum Novitates - search
Antarctic Journal of the United States until 2005
Aquatic Biology
Atoll Research Bulletin (Smithsonian)
Biological Bulletin (Woods Hole) - few papers in open accesss
BMC Evolutionary Biology
Boletim do Museu de História natural do Funcha
Boletín del Instituto Español de Oceanografía
Bulletin of the American Museum of Natural History - search
Bulletin de l'Institut royal des Sciences naturelles de Belgique - et - RBINS Publications
Bulletin de l'Institut Scientifique, Section Sciences de la Vie  (Maroc)
Bulletin of marine and coastal Research
Bulletin of the Museum of comparative Zoology at Harvard College.
Bullettino Malacologico Italiano
Ciencias Marinas - Universidad Autónoma de Baja California
Comptes Rendus Biologies - partly in OA
CNFRA. Comité National Français pour les Recherches Antarctiques Série (1962-1990) - mise en ligne par https://bibliotheques.mnhn.fr/
Contributions to Zoology (Bijdragen tot de Dierkunde since 1848)
Current Biology - partly in OA
Diseases of aquatic Organisms with some Open Access pdf
Ethics in Science and environmental Politics (ESEP)
European Journal of Taxonomy
Functional Ecology
ICES Journal of marine Science - at least in Open Access after a year
Invertebrate Zoology / Zoologiya Bespozvonochnykh [Russia]
Helgoland marine Research
Journal of Cell Biology
Journal of experimental Biology
Journal of marine Research - back from 2014
Journals of the Royal Society, U.K. Archives back to 1665
Journal of threatened Taxa
La Lettre « Changement Global » PIGB - PMRC [English & Français]
Marine Ecology Progress Series with Open Access for pdf published more than 4 years ago
Mediterranean marine Science
Memoirs of the American museum of natural History
Memoirs of Museum Victoria
Proceedings of the Indian Academy of Sciences
Proceedings of the National Academy of Sciences USA (PNAS)
Proceedings B of the Royal Society, London from 1997
Proceedings of the Zoological Society of London from 1834 to 1923
Publications of the Royal Belgian Institute of Natural Sciences (RBINS Publications)
Revista de Biología Tropical (Costa Rica)
Revista de Biologia Marina & Oceanografia
Scientia Marina
Smithsonian Contributions
Species Diversity
Systematics and Biodiversity
VertigO
Vie et Milieu
Zeitschrift für Naturforschung
Zoological Studies
Zoosystema
Zoosystematica Rossica