Ammotrophus arachnoides (H.L. Clark, 1938) (basis of record)
Ammotrophus cyclius H.L. Clark, 1928 (basis of record)
Ammotrophus platyterus H.L. Clark, 1928 (basis of record)
Amphiope (Tetrodiscus) accepted as Tretodiscus Pomel, 1883 accepted as Echinodiscus Leske, 1778 (basis of record)
Amphiope (Tetrodiscus) auritus (Leske, 1778) accepted as Echinodiscus auritus Leske, 1778 accepted as Sculpsitechinus auritus (Leske, 1778) (basis of record)
Amphiope döderleini Lambert & Thiéry, 1921 accepted as Echinodiscus bisperforatus truncatus (L. Agassiz, 1841) accepted as Echinodiscus truncatus (L. Agassiz, 1841) (basis of record)
Amphiope doederleini Lambert & Thiéry, 1921 accepted as Echinodiscus bisperforatus truncatus (L. Agassiz, 1841) accepted as Echinodiscus truncatus (L. Agassiz, 1841) (basis of record)
Anomalanthus tumidus (Tension-Woods, 1878) accepted as Clypeaster tumidus (Tenison-Woods, 1878) (basis of record)
Arachnoides placenta (Linnaeus, 1758) (basis of record)
Arachnoides tenuis H.L. Clark, 1938 (basis of record)
Arachnoides zelandiae Gray, 1855 accepted as Fellaster zelandiae (Gray, 1855) (basis of record)
Arachnoides zeylandiae Gray, 1855 accepted as Fellaster zelandiae (Gray, 1855) (basis of record)
Astriclypeus manni accepted as Astriclypeus mannii Verrill, 1867 (basis of record)
Chaetodiscus Lütken, 1864 accepted as Scaphechinus A. Agassiz, 1864 (basis of record)
Chaetodiscus scutella Lütken, 1864 accepted as Scaphechinus mirabilis A. Agassiz, 1864 (basis of record)
Clypeaster (Alexandria) europacificus H.L. Clark, 1914 accepted as Clypeaster europacificus H.L. Clark, 1914 (basis of record)
Clypeaster (Anomalanthus) tumidus (Tension-Woods, 1878) accepted as Clypeaster tumidus (Tenison-Woods, 1878) (basis of record)
Clypeaster (Bunactis) rangianus Des Moulins, 1835 accepted as Clypeaster rangianus Des Moulins, 1835 (basis of record)
Clypeaster (Coronanthus) amplificatus Koehler, 1922 accepted as Clypeaster amplificatus Koehler, 1922 (new combination reference)
Clypeaster (Coronanthus) latissimus (Lamarck, 1816) accepted as Clypeaster latissimus (Lamarck, 1816) (basis of record)
Clypeaster (Coronanthus) pateriformis Mortensen, 1948 accepted as Clypeaster pateriformis Mortensen, 1948 (basis of record)
Clypeaster (Coronanthus) telurus H.L. Clark, 1914 accepted as Clypeaster telurus H.L. Clark, 1914 (basis of record)
Clypeaster (Leptoclypus) annandalei Koehler, 1922 accepted as Clypeaster annandalei Koehler, 1922 (basis of record)
Clypeaster (Leptoclypus) destinatus Koehler, 1922 accepted as Clypeaster annandalei Koehler, 1922 (basis of record)
Clypeaster (Leptoclypus) rarispinus de Meijere, 1903 accepted as Clypeaster rarispinus de Meijere, 1903 (basis of record)
Clypeaster (Orthanthus) cyclopilus H.L. Clark, 1941 accepted as Clypeaster cyclopilus H.L. Clark, 1941 (basis of record)
Clypeaster (Orthanthus) euclastus H.L. Clark, 1938 accepted as Clypeaster euclastus H.L. Clark, 1941 (basis of record)
Clypeaster (Orthanthus) ravenelii (A. Agassiz, 1869) accepted as Clypeaster ravenelii (A. Agassiz, 1869) (basis of record)
Clypeaster (Pavaya) ohshimensis accepted as Clypeaster (Pavaya) oshimensis Ikeda, 1935 accepted as Clypeaster oshimensis Ikeda, 1935 (basis of record)
Clypeaster (Rhaphidoclypus) australasiae (Gray, 1851) accepted as Clypeaster australasiae (Gray, 1851) (basis of record)
Clypeaster (Rhaphidoclypus) fervens Koehler, 1922 accepted as Clypeaster fervens Koehler, 1922 (new combination reference)
Clypeaster (Rhaphidoclypus) fervens hiradicus Mortensen, 1948 accepted as Clypeaster fervens hiradicus Mortensen, 1948 (basis of record)
Clypeaster (Rhaphidoclypus) lytopetalus A. Agassiz & H.L. Clark, 1907 accepted as Clypeaster lytopetalus A. Agassiz & H.L. Clark, 1907 (basis of record)
Clypeaster (Rhaphidoclypus) reticulatus (Linnaeus, 1758) accepted as Clypeaster reticulatus (Linnaeus, 1758) (basis of record)
Clypeaster (Rhaphidoclypus) reticulatus sundaicus Mortensen, 1948 accepted as Clypeaster reticulatus sundaicus Mortensen, 1948 (basis of record)
Clypeaster (Stolonoclypus) elongatus H.L. Clark, 1948 accepted as Clypeaster elongatus H.L. Clark, 1948 (basis of record)
Clypeaster (Stolonoclypus) eurychorius H.L. Clark, 1924 accepted as Clypeaster eurychorius H.L. Clark, 1925 (new combination reference)
Clypeaster (Stolonoclypus) humilis (Leske, 1778) accepted as Clypeaster humilis (Leske, 1778) (basis of record)
Clypeaster (Stolonoclypus) japonicus Döderlein, 1885 accepted as Clypeaster japonicus Döderlein, 1885 (basis of record)
Clypeaster (Stolonoclypus) lamprus H.L. Clark, 1914 accepted as Clypeaster lamprus H.L. Clark, 1914 (basis of record)
Clypeaster (Stolonoclypus) leptostracon A. Agassiz & H.L. Clark, 1907 accepted as Clypeaster leptostracon A. Agassiz & H.L. Clark, 1907 (basis of record)
Clypeaster (Stolonoclypus) luetkeni Mortensen, 1948 accepted as Clypeaster luetkeni Mortensen, 1948 (basis of record)
Clypeaster (Stolonoclypus) miniaceus H.L. Clark, 1925 accepted as Clypeaster miniaceus H.L. Clark, 1925 (basis of record)
Clypeaster (Stolonoclypus) nummus Mortensen, 1948 accepted as Clypeaster nummus Mortensen, 1948 (basis of record)
Clypeaster (Stolonoclypus) ochrus H.L. Clark, 1914 accepted as Clypeaster ochrus H.L. Clark, 1914 (basis of record)
Clypeaster (Stolonoclypus) prostratus Ravenel, 1848 accepted as Clypeaster prostratus Ravenel, 1848 (basis of record)
Clypeaster (Stolonoclypus) rotundus A. Agassiz, 1863 accepted as Clypeaster rotundus (A. Agassiz, 1863) (basis of record)
Clypeaster (Stolonoclypus) speciosus Verrill, 1870 accepted as Clypeaster speciosus Verrill, 1870 (basis of record)
Clypeaster (Stolonoclypus) subdepressus (Gray, 1825) accepted as Clypeaster subdepressus (Gray, 1825) (basis of record)
Clypeaster (Stolonoclypus) virescens Döderlein, 1885 accepted as Clypeaster virescens Döderlein, 1885 (basis of record)
Clypeaster ambigenus (Lamarck, 1816) accepted as Clypeaster humilis (Leske, 1778) (basis of record)
Clypeaster amplificatus Koehler, 1922 (redescription)
Clypeaster annandalei Koehler, 1922 (redescription)
Clypeaster audouini Fourtau, 1904 accepted as Clypeaster rarispinus de Meijere, 1903 (basis of record)
Clypeaster australasiae (Gray, 1851) (redescription)
Clypeaster clypeus Döderlein, 1885 accepted as Clypeaster japonicus Döderlein, 1885 (basis of record)
Clypeaster cyclopilus H.L. Clark, 1941 (redescription)
Clypeaster destinatus Koehler, 1922 accepted as Clypeaster annandalei Koehler, 1922 (basis of record)
Clypeaster elongatus H.L. Clark, 1948 (basis of record)
Clypeaster euclastus H.L. Clark, 1941 (redescription)
Clypeaster europacificus H.L. Clark, 1914 (redescription)
Clypeaster eurychorius H.L. Clark, 1925 (redescription)
Clypeaster eurypetalus H.L. Clark, 1925 (basis of record)
Clypeaster excelsior Döderlein, 1885 accepted as Clypeaster japonicus Döderlein, 1885 (basis of record)
Clypeaster fervens Koehler, 1922 (redescription)
Clypeaster fervens hiradicus Mortensen, 1948 (original description)
Clypeaster fervens var. hiradicus Mortensen, 1948 accepted as Clypeaster (Rhaphidoclypus) fervens hiradicus Mortensen, 1948 accepted as Clypeaster fervens hiradicus Mortensen, 1948 (original description)
Clypeaster humilis (Leske, 1778) (redescription)
Clypeaster japonicus Döderlein, 1885 (redescription)
Clypeaster laganum (Leske, 1778) accepted as Laganum laganum (Leske, 1778) (basis of record)
Clypeaster lamprus H.L. Clark, 1914 (redescription)
Clypeaster latissimus (Lamarck, 1816) (redescription)
Clypeaster latus Herklots, 1854 accepted as Clypeaster humilis (Leske, 1778) (basis of record)
Clypeaster leptostracon A. Agassiz & H.L. Clark, 1907 (redescription)
Clypeaster luetkeni Mortensen, 1948 (redescription)
Clypeaster lütkeni Mortensen, 1948 accepted as Clypeaster luetkeni Mortensen, 1948 (basis of record)
Clypeaster lytopetalus A. Agassiz & H.L. Clark, 1907 (redescription)
Clypeaster micropetalus H.L. Clark, 1925 accepted as Clypeaster rangianus Des Moulins, 1835 (basis of record)
Clypeaster miniaceus H.L. Clark, 1925 (redescription)
Clypeaster nummus Mortensen, 1948 (redescription)
Clypeaster ochrus H.L. Clark, 1914 (redescription)
Clypeaster ohshimensis accepted as Clypeaster oshimensis Ikeda, 1935 (redescription)
Clypeaster pallidus H.L. Clark, 1914 (basis of record)
Clypeaster pateriformis Mortensen, 1948 (basis of record)
Clypeaster pentaporus (Gmelin, 1791) accepted as Mellita quinquiesperforata (Leske, 1778) (basis of record)
Clypeaster placunarius (Lamarck, 1816) accepted as Clypeaster humilis (Leske, 1778) (basis of record)
Clypeaster prostratus Ravenel, 1848 (redescription)
Clypeaster pulvinulus (Pennant, 1812) accepted as Echinocyamus pusillus (O.F. Müller, 1776) (basis of record)
Clypeaster rangianus Des Moulins, 1835 (redescription)
Clypeaster rarispinus de Meijere, 1903 (redescription)
Clypeaster ravenelii (A. Agassiz, 1869) (redescription)
Clypeaster ravenellii (A. Agassiz, 1869) accepted as Clypeaster ravenelii (A. Agassiz, 1869) (basis of record)
Clypeaster reticulatus (Linnaeus, 1758) (redescription)
Clypeaster reticulatus sundaicus Mortensen, 1948 (original description)
Clypeaster reticulatus var. sundaicus Mortensen, 1948 accepted as Clypeaster (Rhaphidoclypus) reticulatus sundaicus Mortensen, 1948 accepted as Clypeaster reticulatus sundaicus Mortensen, 1948 (original description)
Clypeaster riisei Lütken, 1864 accepted as Clypeaster rotundus (A. Agassiz, 1863) (basis of record)
Clypeaster rosaceus (Linnaeus, 1758) (basis of record)
Clypeaster rotundus (A. Agassiz, 1863) (redescription)
Clypeaster rumphii Des Moulins, 1837 accepted as Clypeaster humilis (Leske, 1778) (basis of record)
Clypeaster saisseti Michelin, 1861 accepted as Clypeaster humilis (Leske, 1778) (basis of record)

Manning-Hawkesbury for Echinocyamus apicatus Mortensen, 1948 

 Authority

 for Clypeaster nummus Mortensen, 1948

Originally attributed to Lovén by Mortensen, but since Lovèn's name was a manuscript name Mortensen is to be ... [details]

 Authority

 for Echinoglycus Gray, 1855

The name Echinoglycus was first used in Leske (1778: p. 197) where "Echinoglycus irregularis" appears (only) as ... [details]

 Authority

 for Echinotrochus Pomel, 1883

The name Echinotrochus was first used in Leske (1778: p. 209) where "Echinotrochus rosaceo" appears (only) as ... [details]

 Authority

 for Rotula augusti (L. Agassiz, 1841)

Authority often given as Klein, 1734. Being pre-Linnean, however, the name is not available. The first available ... [details]

 Status

 for Desmoulinaster Lambert & Thiéry, 1914

Objective junior synonym of Moulinia L. Agassiz, 1841, which is based on a juvenile specimen of Encope emarginata ... [details]

 Status

 for Echinarachnius conchatus M'Clelland, 1840

It is quite possible that M'Clelland's Echinarachnius conchatus is really identical with Laganum depressum; but his ... [details]

 Status

 for Echinotrochus Leske, 1778

First used in Leske (1778: p. 209) where "Echinotrochus rosaceo" appears (only) as translation of Van Phelsum's ... [details]

 Status

 for Encope aberrans Martens, 1867

The clade composed of the Atlantic species Encope aberrans and E. michelini was the first to have split from ... [details]

 Status

 for Encope nummularia (L. Agassiz & Desor, 1847a)

Erroneously cited as Encope nummularia (instead of Mellita nummularia) in the synonymy list of Encope emarginata by ... [details]

 Status

 for Hesperaster H.L. Clark, 1938 †

Mortensen (1948: p. 151) commented on the status of Hesperaster: "There cannot be the slightest doubt but that ... [details]

 Status

 for Hesperaster crassus H.L. Clark, 1938 †

The parent taxon (Hesperaster) was considered a junior synonym of Ammotrophus by Mortensen (1948: p. 151). While he ... [details]

 Status

 for Laganum mazzettii Thiéry, 1909

Since a junior synonym of L. fragile Mazzetti, namely L. delicatum is older than Thiéry's replacement name L. ... [details]

 Status

 for Laganum mirabile H.L. Clark, 1925

That Clark's Laganum mirabile is nothing but the young Clypeaster rarispinus is beyond doubt; the figures given by ... [details]

 Status

 for Lambertiella Checchia-Rispoli, 1917 †

Synonymized with Peronella Gary, 1855 by Mortensen (1948: p. 251), but strictly indeterminate at present. [details]

 Status

 for Moulinia L. Agassiz, 1841

Based on a juvenile specimen of Encope emarginata (fidé A. Agassiz, 1863). [details]

 Taxonomy

 for Mellita tenuis H.L. Clark, 1940

Considered a subspecies of Mellita quinquiesperforata (Leske, 1778) by Mortensen (1948). [details]