Opinions from C. W. Cooke 1942
- 'Agassizia belongs to Schizasteridae'
- 'Agassizia (Anisaster) mossomi belongs to Agassizia (Anisaster)'
- 'Agassizia (Anisaster) wilmingtonica belongs to Agassizia (Anisaster)'
- 'Agassizia floridiana belongs to Agassizia' according to de Loriol 1887
- 'Agassizia floridiana belongs to Agassizia'
- 'Amblypygus belongs to Echinoneidae'
- 'Amblypygus americanus belongs to Amblypygus'
- 'Amblypygus americanus belongs to Amblypygus' according to Desor 1858
- 'Amblypygus merrilli is a subjective synonym of Amblypygus americanus'
- 'Amphidetus clarki belongs to Amphidetus' according to Lambert 1924
- 'Amphidetus clarki is recombined as Lovenia clarki'
- 'Amphidetus gothicus is recombined as Echinocardium gothicum'
- 'Ananchytes cinctus is recombined as Holaster cinctus'
- 'Ananchytes cruciferus is recombined as Trematopygus crucifer'
- 'Ananchytes ovalis is recombined as Echinocorys ovalis'
- 'Anisaster was reranked as Agassizia (Anisaster) and belongs to Agassizia'
- 'Breynella gregoryi is recombined as Cassidulus (Paralampas) gregoryi'
- 'Brissopatagus was reranked as Eupatagus (Brissopatagus) and belongs to Eupatagus'
- 'Brissopsis belongs to Spatangidae'
- 'Brissopsis atlantica belongs to Brissopsis' according to Moretensen 1907
- 'Brissopsis atlantica belongs to Brissopsis'
- 'Brissopsis balnpiedi belongs to Brissopsis' according to Grant and Hertlein 1938
- 'Brissopsis balnpiedi belongs to Brissopsis'
- 'Brissopsis poriferus is recombined as Agassizia porifera'
- 'Brissopsis rimulatus is recombined as Agassizia rimulata'
- 'Brissopsis steinhatchee belongs to Brissopsis'
- 'Cassidulus belongs to Cassidulidae'
- 'Cassidulus (Cassidulus) belongs to Cassidulus'
- 'Cassidulus (Cassidulus) trojanus belongs to Cassidulus (Cassidulus)'
- 'Cassidulus (Galerolampas) fontis belongs to Cassidulus (Galerolampas)'
- 'Cassidulus (Pygorhynchus) alabamensis is recombined as Cassidulus (Cassidulus) alabamensis'
- 'Cassidulus (Pygorhynchus) berryi belongs to Cassidulus (Pygorhynchus)' according to Kellum 1926
- 'Cassidulus (Pygorhynchus) berryi is a subjective synonym of Cassidulus (Pygorhynchus) sabistonensis'
- 'Cassidulus (Pygorhynchus) carolinensis is recombined as Cassidulus (Paralampas) carolinensis'
- 'Cassidulus (Pygorhynchus) georgiensis is a subjective synonym of Cassidulus (Paralampas) lyelli'
- 'Cassidulus (Pygorhynchus) sabistonensis belongs to Cassidulus (Pygorhynchus)' according to Kellum 1931
- 'Cassidulus (Pygorhynchus) sabistonensis is recombined as Cassidulus (Cassidulus) sabistonensis'
- 'Cassidulus (Rhynchopygus) evergladensis belongs to Cassidulus (Rhynchopygus)' according to Mansfield 1932
- 'Cassidulus (Rhynchopygus) evergladensis is recombined as Cassidulus (Cassidulus) evergladensis'
- 'Cassidulus (Rhynchopygus) holmsei is recombined as Eurhodia holmsei'
- 'Cassidulus (Rhynchopygus) ravenli is recombined as Eurhodia ravenli'
- 'Cassidulus caribaearum belongs to Cassidulus' according to Lamarck 1801
- 'Cassidulus caribaearum is recombined as Cassidulus (Cassidulus) caribaearum'
- 'Catopygus conradi is recombined as Cassidulus (Paralampas) conradi'
- 'Catopygus oviformis is recombined as Cassidulus oviformis'
- 'Catopygus patelliformis is recombined as Eurhodia patelliformis'
- 'Clypeaster belongs to Clypeasteridae'
- 'Clypeaster cotteaui belongs to Clypeaster'
- 'Clypeaster gatuni belongs to Clypeaster'
- 'Clypeaster oxybaphon belongs to Clypeaster'
- 'Cyclaster belongs to Spatangidae'
- 'Cyclaster drewryensis belongs to Cyclaster'
- 'Discoidea haldermani is recombined as Oligopygus haldemani'
- 'Echanthus belongs to Cassidulidae'
- 'Echinanthus georgiensis is recombined as Echanthus georgiensis'
- 'Echinanthus subdepressa belongs to Echinanthus' according to Gray 1825
- 'Echinanthus subdepressa is recombined as Clypeaster subdepressus'
- 'Echinarachnius belongs to Scutellidae'
- 'Echinocardiidae belongs to Echinoidea'
- 'Echinocardium belongs to Echinocardiidae'
- 'Echinocorys belongs to Echinocorythidae'
- 'Echinocyamidae belongs to Echinoidea'
- 'Echinocyamus belongs to Echinocyamidae'
- 'Echinocyamus chipolanus belongs to Echinocyamus'
- 'Echinocyamus huxleyanus belongs to Echinocyamus'
- 'Echinocyamus meridionalis belongs to Echinocyamus'
- 'Echinocyamus parvus belongs to Echinocyamus'
- 'Echinocyamus texanus is recombined as Fibularia texanus'
- 'Echinocyamus vaughani is recombined as Fibularia vaughani'
- 'Echinodiscus emarginata belongs to Echinodiscus' according to Leske 1779
- 'Echinodiscus emarginata is recombined as Encope emarginata'
- 'Echinodiscus quinquiesperforatus belongs to Echinodiscus' according to Leske 1779
- 'Echinodiscus quinquiesperforatus is recombined as Mellita quinquiesperforata'
- 'Echinolampas belongs to Echinolampadidae'
- 'Echinolampas appendiculatus is corrected as Echinolampas appendiculata and belongs to Echinolampas'
- 'Echinoneus belongs to Echinoneidae'
- 'Echinoneus cyclostomus belongs to Echinoneus'
- 'Echinus cordatum is recombined as Echinocardium cordatum'
- 'Echinus grandis is recombined as Eupatagus (Plagiobrissus) grandis'
- 'Mellita pentapora is a subjective synonym of Mellita quinquiesperforata'
- 'Echinus rosaceus is recombined as Clypeaster rosaceus'
- 'Encope belongs to Scutellidae'
- 'Encope macrophora tamiamiensis is recombined as Encope tamiamiensis'
- 'Encope macrophora tamiamiensis belongs to Encope macrophora' according to Mansfield 1932
- 'Encope michelini belongs to Encope'
- 'Eupatagus belongs to Spatangidae'
- 'Eupatagus (Brissopatagus) alabamensis belongs to Eupatagus (Brissopatagus)'
- 'Eupatagus (Brissopatagus) georgianus belongs to Eupatagus (Brissopatagus)'
- 'Eupatagus (Brissopatagus) primus belongs to Eupatagus (Brissopatagus)'
- 'Eupatagus (Plagiobrissus) curvus belongs to Eupatagus (Plagiobrissus)'
- 'Eupatagus (Plagiobrissus) dixie belongs to Eupatagus (Plagiobrissus)'
- 'Eupatagus (Plagiobrissus) gardnerae belongs to Eupatagus (Plagiobrissus)'
- 'Eupatagus (Plagiobrissus) ocalanus belongs to Eupatagus (Plagiobrissus)'
- 'Eupatagus carolinensis is recombined as Eupatagus (Plagiobrissus) carolinensis'
- 'Eupatagus mooreanus belongs to Eupatagus' according to Pilsbry 1914
- 'Eupatagus mooreanus is recombined as Eupatagus (Gymnopatagus) mooreanus'
- 'Eurhodia belongs to Cassidulidae'
- 'Eurhodia elbana belongs to Eurhodia'
- 'Fibularia belongs to Echinoneidae'
- 'Galerolampas was reranked as Cassidulus (Galerolampas) and belongs to Cassidulus'
- 'Gymnopatagus was reranked as Eupatagus (Gymnopatagus) and belongs to Eupatagus'
- 'Hemiaster belongs to Schizasteridae'
- 'Hemipatagus belongs to Spatangidae'
- 'Hemipatagus argutus belongs to Hemipatagus'
- 'Hemipatagus subrostratus belongs to Hemipatagus'
- 'Holaster belongs to Spatangidae'
- 'Holaster mortoni is recombined as Macropneustes mortoni'
- 'Laganum belongs to Laganidae'
- 'Laganum archerensis is recombined as Rumphia archerensis'
- 'Laganum dalli is recombined as Peronella dalli'
- 'Laganum eldridgei is recombined as Rumphia eldridgei'
- 'Laganum floridanum belongs to Laganum'
- 'Laganum johnsoni is a subjective synonym of Peronella crustuloides'
- 'Laganum ocalanum belongs to Laganum'
- 'Leodia belongs to Scutellidae'
- 'Linthia was reranked as Schizaster (Linthia) and belongs to Schizaster'
- 'Linthia alabamensis is recombined as Schizaster (Linthia) alabamensis'
- 'Linthia hanoverensis is recombined as Schizaster (Linthia) hanoverensis'
- 'Linthia tumidula belongs to Linthia' according to Clark 1891
- 'Linthia tumidula is recombined as Schizaster (Linthia) tumidulus'
- 'Linthia wilmingtonensis is recombined as Schizaster (Linthia) wilmingtonensis'
- 'Lovenia belongs to Echinocardiidae'
- 'Macropneustes belongs to Spatangidae'
- 'Macropneustes carolinensis belongs to Macropneustes'
- 'Mellita belongs to Scutellidae'
- 'Mellita quinquiesperforata tenuis belongs to Mellita quinquiesperforata' according to Clark 1940
- 'Mellita quinquiesperforata tenuis belongs to Mellita quinquiesperforata'
- 'Mellita sexiesperforata belongs to Mellita' according to Clark 1914
- 'Mellita sexiesperforata is recombined as Leodia sexiesperforata'
- 'Meoma belongs to Spatangidae'
- 'Moira belongs to Schizasteridae'
- 'Nucleolites lyelli is recombined as Cassidulus (Paralampas) lyelli'
- 'Oligopygus belongs to Echinoneidae'
- 'Oligopygus floridanus belongs to Oligopygus'
- 'Oligopygus rotundus belongs to Oligopygus'
- 'Oligopygus wetherbyi belongs to Oligopygus'
- 'Periarchus belongs to Scutellidae'
- 'Periarchus kewi belongs to Periarchus'
- 'Periarchus protuberans belongs to Periarchus'
- 'Pericosmus spatiosus is recombined as Brissus spatiosus'
- 'Peronella belongs to Laganidae'
- 'Peronella cubae belongs to Peronella'
- 'Peronella cubae belongs to Peronella' according to Weisbord 1934
- 'Petalobrissus (Paralampas) is reassigned into Cassidulus'
- 'Plagiobrissus was reranked as Eupatagus (Plagiobrissus) and belongs to Eupatagus'
- 'Plagionotus holmesii is recombined as Eupatagus (Plagiobrissus) holmesii'
- 'Porpitella belongs to Echinocyamidae'
- 'Porpitella micra belongs to Porpitella' according to Clark 1937
- 'Porpitella micra belongs to Porpitella'
- 'Protoscutella belongs to Scutellidae'
- 'Protoscutella pentagonium belongs to Protoscutella'
- 'Pygorhynchus gouldii is recombined as Cassidulus (Cassidulus) gouldii'
- 'Eurhodia rugosa is a subjective synonym of Eurhodia ravenli'
- 'Rumphia belongs to Laganidae'
- 'Sarsella gregoryi is recombined as Vasconaster gregoryi'
- 'Schizaster belongs to Hemiasteridae'
- 'Schizaster (Linthia) ocalanus belongs to Schizaster (Linthia)'
- 'Schizaster americana is corrected as Schizaster americanus and belongs to Schizaster'
- 'Schizaster armiger belongs to Schizaster'
- 'Schizaster beckeri belongs to Schizaster'
- 'Scutella aberti belongs to Scutella'
- 'Scutella caroliniana is recombined as Leodia caroliniana'
- 'Scutella crustuloides is recombined as Peronella crustuloides'
- 'Scutella floridana belongs to Scutella'
- 'Scutella lyelli is recombined as Periarchus lyelli'
- 'Scutella mississippiensis is recombined as Protoscutella mississippiensis'
- 'Scutella parma is recombined as Echinarachnius parma'
- 'Scutella quinquefaria is recombined as Periarchus quinquefarius'
- 'Scutella rogersi is recombined as Clypeaster rogersi'
- 'Scutella tuomeyi is recombined as Protoscutella tuomeyi'
- 'Sismondia conradi is recombined as Protoscutella conradi'
- 'Sismondia plana is recombined as Protoscutella plana'
- 'Spatangus atropos is recombined as Moira atropos'
- 'Spatangus brissus unicolor belongs to Spatangus brissus' according to Leske 1778
- 'Spatangus brissus unicolor is recombined as Brissus unicolor'
- 'Spatangus parastatus is recombined as Hemiaster parastatus'
- 'Spatangus stella is recombined as Hemiaster stella'
- 'Spatangus ventricosus is recombined as Meoma ventricosa'
- 'Spatangus ventricosus belongs to Spatangus' according to Lamarck 1816
- 'Trematopygus belongs to Echinoneidae'
- 'Vasconaster belongs to Echinocardiidae'