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Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

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Publication Retzius (1788): summary
     publication summary

Complete Citation

Retzius, A.J. 1788. Dissertatio historiconaturalis sistens nova testaceorum genera. 23 pp. Available electronically.

Attributed Nominal Genera

Unio Retzius, 1788
Philipsson in Retzius, 1788. Diss. Nat.-Hist. Test. Gen.: 16.
(renamed Unionea Rafinesque, 1815)
Type species: Mya pictorum Linnaeus, 1758 (subsequent designation) = Unio pictorum

Attributed Nominal Species

Mya ovalis Montagu, 1803
Philipsson in Retzius, 1788. Diss. Nat.-Hist. Test. Gen.: 17.
Pulteney, 1799. Cat. Birds. Shells. Dorsetshire: 27. [nomen nudum]
Montagu, 1803. Test. Brit. 1-2: 34.
(misidentified reference to Mya ovalis Lightfoot, 1786)

Mya ovalis Retzius, 1788
Retzius, 1788. Diss. Nat.-Hist. Test. Gen.: ??.
Donovan, 1801. Brit. Shells 3: pl. 89.
(misidentified reference to Mya ovalis Lightfoot, 1786)

Unio crassus Retzius, 1788
Schröter, 1779. Gesch. Flußconch.: 182, pl. 2, fig. 2 [Mya testa crassa]. [non-binomial]
Philipsson in Retzius, 1788. Diss. Nat.-Hist. Test. Gen.: 17.

Unio tumidus Retzius, 1788
Philipsson in Retzius, 1788. Diss. Nat.-Hist. Test. Gen.: 17.

Taxonomic Opinions

Unio corrugatus = Parreysia corrugata

Unio crassus

Unio margaritiferus = Margaritifera margaritifera

Unio ovalis = Unio crassus

Unio pictorum

Unio tumidus

 
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