In 2010 a new proposed classification system for the Bivalvia was published in by Bieler, Carter & Coan revising the classification of the Bivalvia, including the subclass Protobranchia.3
Subclass: Protobranchia
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Source:5
Source:6
Protobranchia Pelseneer, 1889. Retrieved through: World Register of Marine Species on 8 July 2010. http://www.marinespecies.org/aphia.php?p=taxdetails&id=106 ↩
Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 340. ISBN 0-03-056747-5. 0-03-056747-5 ↩
Bieler, R., Carter, J.G. & Coan, E.V. (2010) Classification of Bivalve families. Pp. 113-133, in: Bouchet, P. & Rocroi, J.P. (2010), Nomenclator of Bivalve Families. Malacologia 52(2): 1-184 ↩
Nuclanoida Carter, D.C. Campbell & M.R. Campbell, 2000. Retrieved through: World Register of Marine Species on 9 October 2010. http://www.marinespecies.org/aphia.php?p=taxdetails&id=203 ↩
Nuculida Dall, 1889. Retrieved through: World Register of Marine Species on 20 September 2010. http://www.marinespecies.org/aphia.php?p=taxdetails&id=382247 ↩
Solemyoida Dall, 1889. Retrieved through: World Register of Marine Species on 9 July 2010. http://www.marinespecies.org/aphia.php?p=taxdetails&id=22629 ↩