Argopatagus aculeata (A. Agassiz, 1898) (new combination reference)
Argopatagus multispinus (A. Agassiz & H.L. Clark, 1907) (new combination reference)
Helgocystis cuneata accepted as Helgocystis carinata (A. Agassiz, 1879) (basis of record)
Idiobrissus accepted as Idiobryssus H.L. Clark, 1939 (basis of record)
Isaster obovatus (Mortensen, 1948) (new combination reference)
Isopatagus Mortensen, 1948 accepted as Isaster Desor, 1858 (status source)
Isopatagus obovatus Mortensen, 1948 accepted as Isaster obovatus (Mortensen, 1948) (status source)
Maretia cordiformis accepted as Maretia cordata Mortensen, 1948 (basis of record)
Metalia persica var. elevata (Mortensen, 1940) accepted as Metalia persica elevata (Mortensen, 1940) (basis of record)
Nacospatangus altus (A. Agassiz, 1864) (new combination reference)
Nacospatangus oblongus (Mortensen, 1950) (basis of record)
Nacospatangus tylotus (H.L. Clark, 1917) (basis of record)
Ova (Aplospatangus) edwardsi (Cotteau, 1889) accepted as Schizaster edwardsi Cotteau, 1889 (basis of record)
Ova (Aplospatangus) orbignyanus (A. Agassiz, 1880) accepted as Schizaster orbignyanus A. Agassiz, 1880 (basis of record)
Phrissocystis aculeata A. Agassiz, 1898 accepted as Argopatagus aculeata (A. Agassiz, 1898) (status source)
Phrissocystis multispina A. Agassiz & H.L. Clark, 1907 accepted as Argopatagus multispinus (A. Agassiz & H.L. Clark, 1907) (status source)

 Authority

 for Maretia cordiformis

Attributed to "Mortensen, 1948" in Schultz (2009: p. 703), but Mortensen used the name "cordata" for this species. [details]

 Status

 for Phrissocystis aculeata A. Agassiz, 1898

Schultz (2009: p. 683) states "Mortensen 1950 believed the two genera [Argopatagus and Phrissocystis] synonymous", ... [details]

 Status

 for Phrissocystis multispina A. Agassiz & H.L. Clark, 1907

Schultz (2009: p. 683) states "Mortensen 1950 believed the two genera [Argopatagus and Phrissocystis] synonymous", ... [details]