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Cassidulus

Echinoidea - Cassiduloida - Cassidulidae

Synonymy list
YearName and author
1801Cassidulus Lamarck p. 348
1846Nucleolites (Cassidulus) Forbes p. 162
1915Cassidulus Clark and Twitchell p. 74
1920Cassidulus Kew p. 138
1938Cassidulus Grant and Hertlein p. 107
1942Cassidulus Cooke p. 30
1962Cassidulus Kier p. 174
1966Cassidulus Kier p. U514
1968Cassidulus Nisiyama p. 8
2002Cassidulus Sepkoski
2009Cassidulus Smith pp. http://www.nhm.ac.uk/our-science/data/ec

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
RankNameAuthor
superorderAcroechinoidea()
Carinacea
Irregularia()
Microstomata
Neognathostomata
orderCassiduloida
suborderCassidulina
familyCassidulidae
genusCassidulus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. Cassidulus Lamarck 1801
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Subg. Cassidulus (Cassidulus) Lamarck 1801
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Subg. †Cassidulus (Galerolampas) Cotteau 1889
Cassidulus abruptus Conrad 1860
Cassidulus amygdala Desor 1858
Cassidulus caribaearum Lamarck 1801
Cassidulus gouldii Bouve 1846
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Invalid names: Cassidulus (Cassidulus) alabamensis Clark and Twitchell 1915 [synonym]
Cassidulus mercedensis Anderson 1958
Cassidulus rojasi Sanchez-Roig 1953
Cassidulus yoshiwarai Loriol 1902
Diagnosis
ReferenceDiagnosis
A. B. Smith 2009Test small, low, elongate oval; broader posteriorly, base more or less flat; Apical system anterior; monobasal with four gonopores; Petals moderately developed, straight, the two poriferous zones of the same petal usually unequal in length; Ambulacra plates beyond petals single pored; Periproct supramarginal, subrounded, with short groove on subanal ledge extending from periproct to posterior margin; Peristome pentagonal, transverse, anterior, with vertical-walled entrance; Bourrelets confined to vertical sides of peristome, basicoronal plates short, very slightly inflated at outer edge; Phyllodes single pored, with slight crowding of pores, one or two occluded pores in some ambulacra but for the most part forming a single series widening slightly towards the peristome; Three or four sphaeridial pits perradially in phyllodes and partially enclosed; Buccal pores present; Adorally tubercles much larger, scrobicules often polygonal, with bosses eccentric anteriorly; adorally, naked, pitted area in interambulacrum 5, ambulacrum III