Aceste bellidifera Thomson, 1877 (additional source)
Aceste ovata A. Agassiz & H.L. Clark, 1907 (basis of record)
Aceste purpurea A. Agassiz & H.L. Clark, 1907 accepted as Aceste ovata A. Agassiz & H.L. Clark, 1907 (basis of record)
Aerope fulva A. Agassiz, 1898 accepted as Aeropsis fulva (A. Agassiz, 1898) (basis of record)
Aerope rostrata Norman, 1876 accepted as Aeropsis rostrata (Norman, 1876) (additional source)
Aeropsis fulva (A. Agassiz, 1898) (basis of record)
Aeropsis rostrata (Norman, 1876) (additional source)
Archaeopneustes hystrix (A. Agassiz, 1880) accepted as Heterobrissus hystrix (A. Agassiz, 1880) (basis of record)
Argopatagus planus (A. Agassiz & H.L. Clark, 1907) (basis of record)
Argopatagus vitreus A. Agassiz, 1879 (basis of record)
Ceratophysa ceratopyga (A. Agassiz, 1879) (basis of record)
Ceratophysa rosea (A. Agassiz, 1879) (basis of record)
Corystus relictus (de Meijere, 1902) (basis of record)
Cystechinus clypeatus A. Agassiz, 1879 accepted as Carnarechinus clypeatus (A. Agassiz, 1879) (basis of record)
Cystechinus loveni A. Agassiz, 1898 (basis of record)
Cystechinus vesica A. Agassiz, 1879 accepted as Pilematechinus vesica (A. Agassiz, 1879) (basis of record)
Cystocrepis setigera (A. Agassiz, 1898) (basis of record)
Delopatagus brucei Koehler, 1907 (basis of record)
Echinocrepis cuneata A. Agassiz, 1879 (basis of record)
Echinocrepis setigera A. Agassiz, 1898 accepted as Cystocrepis setigera (A. Agassiz, 1898) (basis of record)
Echinosigra paradoxa (Mortensen, 1905) accepted as Echinosigra (Echinosigra) phiale phiale (Thomson, 1873) (additional source)
Echinosigra phiale (Thomson, 1873) represented as Echinosigra (Echinosigra) phiale (Thomson, 1873) (additional source)
Genicopatagus affinis A. Agassiz, 1879 (basis of record)
Helgocystis carinata (A. Agassiz, 1879) (basis of record)
Hemiaster (Integraster) Lambert & Thiéry, 1924 accepted as Holanthus Lambert & Thiéry, 1924 (basis of record)
Hemiaster (Integraster) gibbosus A. Agassiz, 1879 accepted as Holanthus expergitus gibbosus (A. Agassiz, 1879) (basis of record)
Hemiaster expergitus Lovén, 1871 accepted as Holanthus expergitus (Lovén, 1871) (additional source)
Hemiaster gibbosus A. Agassiz, 1879 accepted as Holanthus expergitus gibbosus (A. Agassiz, 1879) (additional source)
Hemiaster mentzi A. Agassiz, 1880 accepted as Holanthus expergitus (Lovén, 1871) (basis of record)
Hemiaster tenuis (A. Agassiz, 1898) accepted as Holanthus tenuis (A. Agassiz, 1898) (basis of record)
Heterobrissus hystrix (A. Agassiz, 1880) (redescription)
Holanthus expergitus (Lovén, 1871) (redescription)
Holanthus expergitus gibbosus (A. Agassiz, 1879) (basis of record)
Homolampas fragilis (A. Agassiz, 1869) (basis of record)
Homolampas fulva A. Agassiz, 1879 accepted as Araeolampas fulva (A. Agassiz, 1879) (basis of record)
Homolampas hastata A. Agassiz, 1898 accepted as Araeolampas hastata (A. Agassiz, 1898) (basis of record)
Homolampas lovenioides Mortensen, 1948 (basis of record)
Isopatagus obovatus Mortensen, 1948 accepted as Isaster obovatus (Mortensen, 1948) (basis of record)
Linopneustes excentricus de Meijere, 1903 (basis of record)
Linopneustes fragilis (de Meijere, 1903) (basis of record)
Linopneustes longispinus (A. Agassiz, 1878) (basis of record)
Linopneustes murrayi (A. Agassiz, 1879) (basis of record)
Linopneustes spectabilis (de Meijere, 1902) (basis of record)
Lissonotus A. Agassiz, 1869 accepted as Homolampas A. Agassiz, 1874 (basis of record)
Lissonotus fragilis A. Agassiz, 1869 accepted as Homolampas fragilis (A. Agassiz, 1869) (basis of record)
Meijerea Döderlein, 1906 accepted as Argopatagus A. Agassiz, 1879 (basis of record)
Meijerea excentrica A. Agassiz & H.L. Clark, 1907 accepted as Argopatagus vitreus A. Agassiz, 1879 (basis of record)
Meijerea plana A. Agassiz & H.L. Clark, 1907 accepted as Argopatagus planus (A. Agassiz & H.L. Clark, 1907) (basis of record)
Palaeopneustes accepted as Paleopneustes A. Agassiz, 1873 (basis of record)
Palaeotropus hirondellei Koehler, 1895 accepted as Palaeotropus josephinae Lovén, 1871 (additional source)
Palaeotropus josephinae Lovén, 1871 (additional source)
Palaeotropus loveni A. Agassiz, 1879 accepted as Paleotrema loveni (A. Agassiz, 1879) (basis of record)
Palaeotropus thomsoni (A. Agassiz, 1880) (basis of record)
Paleopneustes cristatus A. Agassiz, 1873 (basis of record)
Paleopneustes hystrix A. Agassiz, 1880 accepted as Heterobrissus hystrix (A. Agassiz, 1880) (basis of record)
Paleopneustes murrayi A. Agassiz, 1879 accepted as Linopneustes murrayi (A. Agassiz, 1879) (basis of record)
Paleotrema loveni (A. Agassiz, 1879) (basis of record)
Periaster tenuis A. Agassiz, 1898 accepted as Holanthus tenuis (A. Agassiz, 1898) (basis of record)
Peripatagus cinctus Koehler, 1895 (additional source)
Phrissocystis aculeata A. Agassiz, 1898 accepted as Argopatagus aculeata (A. Agassiz, 1898) (basis of record)
Pilematechinus rathbuni (A. Agassiz, 1898) (basis of record)
Pilematechinus vesica (A. Agassiz, 1879) (basis of record)
Platybrissus roemeri Grube, 1865 (basis of record)
Plesiozonus diomedeae Mortensen, 1948 (basis of record)
Plesiozonus hirsutus de Meijere, 1903 (basis of record)
Plexechinus cinctus A. Agassiz, 1898 (basis of record)
Plexechinus hirsutus Mortensen, 1905 (additional source)
Plexechinus spectabilis Mortensen, 1948 (basis of record)
Pourtalesia alcocki Koehler, 1914 (basis of record)
Pourtalesia aurorae Koehler, 1926 (basis of record)
Pourtalesia carinata A. Agassiz, 1879 accepted as Helgocystis carinata (A. Agassiz, 1879) (basis of record)
Pourtalesia ceratopyga A. Agassiz, 1879 accepted as Ceratophysa ceratopyga (A. Agassiz, 1879) (basis of record)
Pourtalesia debilis Koehler, 1926 (basis of record)
Pourtalesia hispida A. Agassiz, 1879 (basis of record)
Pourtalesia jeffreysi Thomson, 1873 (additional source)
Pourtalesia laguncula A. Agassiz, 1879 (basis of record)
Pourtalesia miranda A. Agassiz, 1869 (basis of record)
Pourtalesia paradoxa Mortensen, 1905 accepted as Echinosigra paradoxa (Mortensen, 1905) accepted as Echinosigra (Echinosigra) phiale phiale (Thomson, 1873) (additional source)
Pourtalesia phiale Thomson, 1873 accepted as Echinosigra phiale (Thomson, 1873) represented as Echinosigra (Echinosigra) phiale (Thomson, 1873) (additional source)
Pourtalesia rosea A. Agassiz, 1879 accepted as Ceratophysa rosea (A. Agassiz, 1879) (basis of record)
Pourtalesia tanneri A. Agassiz, 1898 (basis of record)
Pourtalesia wandeli Mortensen, 1905 accepted as Pourtalesia miranda A. Agassiz, 1869 (additional source)
Pycnolampas oviformis A. Agassiz & H.L. Clark, 1907 (basis of record)
Sarsiaster griegii Mortensen, 1950 (basis of record)
Spatagocystis challengeri A. Agassiz, 1879 (basis of record)
Stereopneustes relictus de Meijere, 1903 accepted as Corystus relictus (de Meijere, 1902) (basis of record)
Urechinus clypeatus (A. Agassiz, 1879) accepted as Carnarechinus clypeatus (A. Agassiz, 1879) (basis of record)
Urechinus drygalskii Mortensen, 1905 accepted as Antrechinus drygalskii (Mortensen, 1905) (basis of record)
Urechinus giganteus A. Agassiz, 1898 accepted as Cystechinus giganteus (A. Agassiz, 1898) (basis of record)
Urechinus loveni (A. Agassiz, 1898) accepted as Cystechinus loveni A. Agassiz, 1898 (basis of record)
Urechinus naresianus A. Agassiz, 1879 (basis of record)
Urechinus reticulatus H.L. Clark, 1913 (basis of record)
Urechinus wyvilli (A. Agassiz, 1879) accepted as Cystechinus wyvillii A. Agassiz, 1879 (basis of record)

Antarctic Ocean for Antrechinus nordenskjoldi (Mortensen, 1905) 

 Authority

 for Spatangoida

Often referred to L. Agassiz, 1840a (e.g. by Mortensen, 1850), but first used at ordinal level by Claus (1876) [details]

 Nomenclature

 for Amphisternata

ex "Amphisternous Spatangidae" Lovén, 1883; ex "Amphisterniens" Lambert, 1893 [details]

 Spelling

 for Palaeopneustes

Mortensen's (1950: p. 189, footnote) emended Agassiz's original spelling "Paleopneustes" to "Palaeopneustes". While ... [details]

 Status

 for Phrissocystis A. Agassiz, 1898

Argopatagus A. Agassiz, 1879 and Phrissocystis A. Agassiz, 1898 are similar in all respects other than that ... [details]

 Status

 for Sternopatagus sinensis Bather, 1934

Bather (1934 […]) has established a new species of Sternopatagus, St. sinensis, without giving any real diagnosis ... [details]

 Status

 for Urechinus clypeatus (A. Agassiz, 1879)

Generic attribution uncertain. [details]

 Synonymy

 for Pourtalesia miranda A. Agassiz, 1869

Mortensen (1950: p. 144-145) has Pourtalesia wandeli tentatively in the synonymy of P. miranda, but states in the ... [details]

 Synonymy

 for Pourtalesia wandeli Mortensen, 1905

Mortensen (1950: p. 144-145) has Pourtalesia wandeli tentatively in the synonymy of P. miranda, but states in the ... [details]