Classification of Cooke 1942
Cl. Echinoidea Leske 1778 [sea urchin]
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Invalid names: Echinocardiidae Cooke 1942 [empty], Echinocyamidae Cooke 1942 [empty]
G. †Scutella Lamarck 1816
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†Scutella aberti Conrad 1842
†Scutella floridana Cooke 1942
G. Brissus Gray 1825
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†Brissus spatiosus Ravenel 1848
†Brissus unicolor Leske 1778
Fm. Schizasteridae Lambert 1905
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G. Agassizia Valenciennes 1846
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Subg. †Agassizia (Anisaster) Pomel 1886
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†Agassizia (Anisaster) mossomi Cooke 1942
†Agassizia (Anisaster) wilmingtonica Cooke 1942
†Agassizia floridiana de Loriol 1887
†Agassizia porifera Ravenel 1848
†Agassizia rimulata Ravenel 1848
G. Hemiaster Agassiz and Desor 1847 [heart urchin]
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†Hemiaster parastatus Morton 1833
†Hemiaster stella Morton 1830
Fm. Laganidae Desor 1858
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G. Peronella Gray 1855
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†Peronella crustuloides Morton 1833
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Invalid names: Laganum johnsoni Clark and Twitchell 1915 [synonym]
†Peronella cubae Weisbord 1934
†Peronella dalli Clark and Twitchell 1915
G. Rumphia Desor 1858
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†Rumphia archerensis Clark and Twitchell 1915
†Rumphia eldridgei Clark and Twitchell 1915
Fm. Spatangidae Gray 1825
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G. Brissopsis Agassiz 1840
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†Brissopsis atlantica Moretensen 1907
†Brissopsis balnpiedi Grant and Hertlein 1938
†Brissopsis steinhatchee Cooke 1942
G. Eupatagus Agassiz 1847
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Subg. †Eupatagus (Brissopatagus) Cotteau 1863
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†Eupatagus (Brissopatagus) alabamensis Cooke 1942
†Eupatagus (Brissopatagus) georgianus Cooke 1942
†Eupatagus (Brissopatagus) primus Cooke 1942
Subg. Eupatagus (Plagiobrissus) Pomel 1883
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†Eupatagus (Plagiobrissus) carolinensis Clark and Twitchell 1915
†Eupatagus (Plagiobrissus) curvus Cooke 1942
†Eupatagus (Plagiobrissus) dixie Cooke 1942
†Eupatagus (Plagiobrissus) gardnerae Cooke 1942
Eupatagus (Plagiobrissus) grandis Gmelin 1788
†Eupatagus (Plagiobrissus) holmesii McCrady 1855
†Eupatagus (Plagiobrissus) ocalanus Cooke 1942
G. †Hemipatagus Desor 1858
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†Hemipatagus argutus Clark and Twitchell 1915
†Hemipatagus subrostratus Clark and Twitchell 1915
G. Macropneustes Agassiz 1847
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†Macropneustes carolinensis Clark and Twitchell 1915
†Macropneustes mortoni Conrad 1850
Fm. Scutellidae Gray 1825
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G. Encope Agassiz 1840
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†Encope emarginata Leske 1779
Encope michelini Agassiz 1841
†Encope tamiamiensis Mansfield 1932
G. Mellita Agassiz 1841
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†Mellita quinquiesperforata Leske 1778
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†Mellita quinquiesperforata tenuis Clark 1940
Invalid names: Mellita pentapora Gmelin 1788 [synonym]
G. †Periarchus Conrad 1866
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†Periarchus kewi Cooke 1942
†Periarchus lyelli Conrad 1834
†Periarchus protuberans Clark and Twitchell 1915
†Periarchus quinquefarius Say 1825
G. †Protoscutella Stefanini 1924
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†Protoscutella conradi Cotteau 1891
†Protoscutella mississippiensis Clark and Twitchell 1915
†Protoscutella pentagonium Cooke 1942
†Protoscutella plana Conrad 1865
†Protoscutella tuomeyi Clark and Twitchell 1915
Fm. Hemiasteridae Clark 1917
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G. Schizaster Agassiz 1835
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Subg. †Schizaster (Linthia) Desor 1853
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†Schizaster (Linthia) alabamensis Clark and Twitchell 1915
†Schizaster (Linthia) hanoverensis Kellum 1926
†Schizaster (Linthia) ocalanus Cooke 1942
†Schizaster (Linthia) tumidulus Clark 1891
†Schizaster (Linthia) wilmingtonensis Clark and Twitchell 1915
†Schizaster americanus Clark and Twitchell 1915
†Schizaster armiger Clark and Twitchell 1915
†Schizaster beckeri Cooke 1942
Fm. Echinoneidae Agassiz and Desor 1847
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G. †Amblypygus Agassiz 1840
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†Amblypygus americanus Desor 1858
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Invalid names: Amblypygus merrilli Clark and Twitchell 1915 [synonym]
G. Fibularia Lamarck
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†Fibularia texanus Clark and Twitchell 1915
†Fibularia vaughani Clark and Twitchell 1915
G. †Oligopygus
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†Oligopygus floridanus Clark and Twitchell 1915
†Oligopygus haldemani Conrad 1850
†Oligopygus rotundus Cooke 1942
†Oligopygus wetherbyi de Lortiol 1887
Fm. Clypeasteridae Agassiz 1836
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G. Clypeaster Lamarck 1801
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†Clypeaster cotteaui Egozcue 1897
†Clypeaster gatuni Jackson 1917
†Clypeaster oxybaphon Jackson 1922
†Clypeaster rogersi Morton 1834
Clypeaster rosaceus Linnaeus 1758
†Clypeaster subdepressus Gray 1825
Fm. Echinolampadidae Gray 1851
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Fm. †Echinocorythidae Wright 1857
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Fm. Cassidulidae Agassiz and Desor 1847
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G. Cassidulus Lamarck 1801
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Subg. Cassidulus (Cassidulus) Lamarck 1801
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†Cassidulus (Cassidulus) alabamensis Clark and Twitchell 1915
†Cassidulus (Cassidulus) caribaearum Lamarck 1801
†Cassidulus (Cassidulus) evergladensis Mansfield 1932
†Cassidulus (Cassidulus) gouldii Bouve 1846
†Cassidulus (Cassidulus) sabistonensis Kellum 1931
†Cassidulus (Cassidulus) trojanus Cooke 1942
Subg. †Cassidulus (Paralampas) Duncan and Sladen 1882
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†Cassidulus (Paralampas) carolinensis Clark and Twitchell 1915
†Cassidulus (Paralampas) conradi Couper 1850
†Cassidulus (Paralampas) gregoryi Clark and Twitchell 1915
†Cassidulus (Paralampas) lyelli Conrad 1850
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Invalid names: Cassidulus (Pygorhynchus) georgiensis Clark and Twitchell 1915 [synonym]
†Cassidulus oviformis Clark and Twitchell 1915
G. †Eurhodia
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†Eurhodia elbana Cooke 1942
†Eurhodia holmsei Clark and Twitchell 1915
†Eurhodia patelliformis BouvĂ© 1851
†Cassidulus (Pygorhynchus) sabistonensis Kellum 1931
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Invalid names: Cassidulus (Pygorhynchus) berryi Kellum 1926 [synonym]