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Heterodiadema libycum

Echinoidea - Pseudodiadematidae

Taxonomy
Hemicidaris libyca was named by Agassiz and Desor (1846). It is a 3D body fossil.

It was recombined as Heterodiadema lybicum by Néraudeau et al. (1995); it was recombined as Heterodiadema libycum by Néraudeau and Courville (1997), Berndt (2003).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1846Hemicidaris libyca Agassiz and Desor p. 338
1995Heterodiadema lybicum Néraudeau et al. p. 406 fig. 3e
1997Heterodiadema libycum Néraudeau and Courville p. 839 fig. 6.6
2003Heterodiadema libycum Berndt p. 78

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
Echinozoa()
RankNameAuthor
classEchinoidea()
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
Carinacea
familyPseudodiadematidae
genusHeterodiademaCotteau 1864
specieslibycum(Agassiz and Desor 1846)

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.

Heterodiadema libycum Agassiz and Desor 1846
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: actively mobilec
Life habit: epifaunalc
Diet: grazerc
Diet 2: deposit feederc
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 12:05:24
Modified: 2010-02-12 04:00:29
Source: c = class, p = phylum
References: Aberhan 1992, Kiessling 2004

Age range: base of the Early/Lower Cenomanian to the top of the Late/Upper Campanian or 100.50000 to 72.20000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Albian - Cenomanian106.3 - 93.9Egypt Heterodiadema libycum (150677 150876)
Cenomanian100.5 - 93.9Jordan Heterodiadema libycum (96246 96247 140949)
Cenomanian100.5 - 93.9Saudi Arabia Heterodiadema lybicum (195496 195497 195499 195500 195501)
Early/Lower Cenomanian100.5 - 93.9Egypt Heterodiadema libycum (140114 140613)
Early/Lower Cenomanian - Middle Cenomanian100.5 - 93.9Egypt Heterodiadema libycum (114785 150675)
Late/Upper Cenomanian100.5 - 93.9Nigeria Heterodiadema libycum (4048 4055 210160)
Late/Upper Cenomanian100.5 - 93.9Egypt Heterodiadema libycum (114794 114809 114889 114891 140578 140581)
Middle Cenomanian100.5 - 93.9Serbia Heterodiadema lybicum (164671)
Early/Lower Turonian93.9 - 89.8Egypt Heterodiadema libycum (140245)
Late/Upper Campanian83.6 - 72.2Saudi Arabia Heterodiadema lybicum (195503)