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Hardouinia mortonis

Echinoidea - Cassiduloida

Taxonomy
Pygorhynchus mortonis was named by Michelin (1850).

It was recombined as Echinanthus mortonis by Clark and Twitchell (1915); it was recombined as Hardouinia mortonis by Cooke (1953), Kier (1962).

Subspecies
H. emmonsi (syn. Cassidulus berryi, Hardouinia stetsoni)
Sister species lacking formal opinion data
H. bexari, H. dalli, H. moretonis, H. mortoni, H. weatherbyi
Entered
by M. Clapham on 2018-10-17

Synonyms
Synonymy list
YearName and author
1850Pygorhynchus mortonis Michelin
1858Gonioclypeus subangulatus Emmons
1860Cassidulus subquadratus Conrad
1891Cassidulus subconicus Clark
1915Echinanthus mortonis Clark and Twitchell p. 67
1915Cassidulus subconicus Clark and Twitchell p. 77
1915Cassidulus subquadratus Clark and Twitchell p. 77
1953Hardouinia mortonis Cooke p. 19
1962Hardouinia mortonis Kier p. 147

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
orderCassiduloida
genusHardouinia()
speciesmortonis(Michelin 1850)

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.

†Hardouinia mortonis Michelin 1850
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†Hardouinia mortonis emmonsi Stephenson 1927
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Invalid names: Cassidulus berryi Clark and Twitchell 1915 [synonym], Hardouinia stetsoni Stephenson 1936 [synonym]
Invalid names: Cassidulus subconicus Clark 1891 [synonym], Cassidulus subquadratus Conrad 1860 [synonym], Gonioclypeus subangulatus Emmons 1858 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calciteo
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: slow-movingo
Life habit: semi-infaunalo
Diet: detritivoreo
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 17:48:53
Modified: 2009-10-08 14:57:31
Source: o = order, c = class, p = phylum
References: Aberhan 1992, Aberhan et al. 2004, Kiessling 2004

Age range: base of the Late/Upper Santonian to the top of the Late/Upper Maastrichtian or 85.70000 to 66.00000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Santonian85.7 - 83.6USA (Alabama) Cassidulus subquadratus (239865)
Early/Lower Maastrichtian72.2 - 66.0USA (Georgia) Hardouinia mortonis (78131 197151)
Early/Lower Maastrichtian72.2 - 66.0USA (Mississippi) Hardouinia mortonis (4099 4100 4120 197143 197146)
Early/Lower Maastrichtian72.2 - 66.0USA (Alabama) Hardouinia mortonis (78130 197148 197149 197150)
Late/Upper Maastrichtian72.2 - 66.0USA (South Carolina) Hardouinia mortonis (78132)
Late/Upper Maastrichtian72.2 - 66.0USA (North Carolina) Cassidulus berryi (197165) Cassidulus emmonsi (78134 197166 197169) Gonioclypeus subangulatus (78133) Hardouinia mortonis (197167 197168)
Late/Upper Maastrichtian72.2 - 66.0USA (Texas) Hardouinia mortonis (4558 4632 197170)
Maastrichtian72.2 - 66.0USA (Mississippi) Hardouinia mortonis (7603 7606)
Maastrichtian72.2 - 66.0North Atlantic Hardouinia stetsoni (197164)