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Sismondia

Echinoidea - Clypeasteroida - Laganidae

Taxonomy
Sismondia was named by Desor (1858) [Sepkoski's age data: T Eo-l T Mi-m Sepkoski's reference number: 956].

It was assigned to Laganidae by Durham (1955) and Durham (1966); to Fibulariidae by Clark and Twitchell (1915), Kew (1920) and Nisiyama (1968); and to Clypeasteroida by Sepkoski (2002).

Synonymy list
YearName and author
1858Sismondia Desor p. 225
1915Sismondia Clark and Twitchell p. 121
1920Sismondia Kew p. 61
1955Sismondia Durham p. 141 figs. Fig. 31, b
1966Sismondia Durham p. U475
1968Sismondia Nisiyama p. 57
2002Sismondia Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
RankNameAuthor
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
orderClypeasteroida
suborderScutellina()
infraorderLaganiformes
familyLaganidae()
genusSismondia

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. †Sismondia Desor 1858
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†Sismondia arnoldi Clark and Twitchell 1915
†Sismondia coalingaensis Clark and Twitchell 1915
†Sismondia convexa Nisiyama 1937
†Sismondia javana Nisiyama 1968
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
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 18:19:59
Modified: 2009-10-08 15:05:22
Source: o = order, c = class, p = phylum
References: Aberhan 1992, Kiessling 2004, Aberhan et al. 2004

Age range: base of the Lutetian to the top of the Early/Lower Pliocene or 47.80000 to 3.60000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Lutetian47.8 - 41.3Libya (Ajdabiya) S. saemanni (42129)
Lutetian47.8 - 41.3Egypt S. logtheti (41900)
Lutetian47.8 - 41.3Libya S. ocitana (42125)
Middle Eocene47.8 - 37.71Egypt (Quseir) S. logotheti, S. sp. (3300)
Priabonian38.0 - 33.9Germany (Bavaria) S. ombonii (10963)
Priabonian38.0 - 33.9Romania (Cluj-Napoca) S. occitana (221117)
Early/Lower Oligocene33.9 - 28.4Oman (Dhofar) S. javana (175334)
Late/Upper Oligocene28.4 - 23.03Antigua and Barbuda S. antillarum (80290)
Late/Upper Miocene - Early/Lower Pliocene11.608 - 3.6USA (California) Merriamaster coalingaensis (203539) S. arnoldi (203559)