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Eucyrtidium

Protozoa - Nassellaria - Eucyrtidiidae

Taxonomy
Eucyrtidium was named by Ehrenberg (1847) [Sepkoski's age data: J Tith-l R Sepkoski's reference number: 685]. It is extant. Its type is Lithocampe acuminata. It is the type genus of Eucyrtidiidae.

It was assigned to Eucyrtidiidae by De Wever et al. (2001); and to Nassellaria by Sepkoski (2002).

Species
E. acuminatum, E. matsumotoi, E. trachelius
Species lacking formal opinion data
E. carnegiense

Synonyms
  • Eucyrtis was named by Haeckel (1882) [Sepkoski's age data: J Call-u K Apti-u Sepkoski's reference number: 685]. It is not extant.

    It was synonymized objectively with Eucyrtidium by Suzuki (2009).

    It was assigned to Nassellaria by Sepkoski (2002).
Synonymy list
YearName and author
1847Eucyrtidium Ehrenberg
1882Eucyrtis Haeckel
2001Eucyrtidium De Wever et al. p. 278
2002Eucyrtidium Sepkoski
2002Eucyrtis Sepkoski

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
superorderPolycystina(Ehrenberg 1838)
orderNassellariaEhrenberg 1875
superfamilyEucyrtidiaceaEhrenberg 1847
familyEucyrtidiidaeEhrenberg 1847
genusEucyrtidiumEhrenberg 1847

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. Eucyrtidium Ehrenberg 1847
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Eucyrtidium acuminatum Ehrenberg 1844
†Eucyrtidium matsumotoi Taketani 1982
Eucyrtidium trachelius Ehrenberg 1861
Invalid names: Eucyrtis Haeckel 1882 [objective synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: silicap
Environment: marinep
Locomotion: passively mobilep
Life habit: planktonicp
Diet: omnivorep
Created: 2005-01-28 01:13:47
Modified: 2005-01-28 03:13:47
Source: p = phylum
Reference: Kiessling 1999

Age range

Maximum range based only on fossils: base of the Carnian to the top of the Late/Upper Pleistocene or 237.00000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 228.0 Ma

Collections (89 total)


Time interval Ma Country or state Original ID and collection number
Carnian237.0 - 228.0Albania E. sp. (53988)
Carnian - Norian237.0 - 208.5Albania E. sp. (53990)
Pliensbachian190.8 - 182.7USA (California) E. sp. A (185283 185294) E. sp. A, E. sp. B (185250 185287) E. sp. B (185248 185249 185282 185288)
Early/Lower Bajocian171.6 - 168.4Canada (British Columbia) E. sp. A (71117 71122)
Middle Callovian164.7 - 161.2Italy Eucyrtis sp. J, Eucyrtis sp. B, Eucyrtis sp. C (53907)
Early/Lower Tithonian150.8 - 145.0Antarctica E. sp. A (46971) E. sp. B (51827)
Early/Lower Valanginian140.2 - 136.4Italy Eucyrtis columbaria (51779 51780 51781 51782 51783 51784)
Late/Upper Valanginian140.2 - 136.4Italy Eucyrtis columbaria (51703 51704 51705 51706 51707)
Late/Upper Valanginian - Early/Lower Hauterivian140.2 - 130.0Italy Eucyrtis columbaria (51702)
Valanginian - Barremian139.8 - 125.0Malaysia Eucyrtis tenuis (69300 69301)
Early/Lower Hauterivian136.4 - 130.0Italy Eucyrtis columbaria (49138 49139 51698 51699 51700 51701)
Late/Upper Hauterivian136.4 - 130.0Italy Eucyrtis columbaria (49131 49132 49140 49141 49142 49143 49144 51792 51793)
Late/Upper Hauterivian - Early/Lower Barremian136.4 - 125.45Italy Eucyrtis columbaria (49130)
Late/Upper Hauterivian - Barremian136.4 - 125.0Italy Eucyrtis columbaria (51696 51697)
Early/Lower Barremian130.0 - 125.45Italy Eucyrtis columbaria (49126 49127 49128 49129 51794 51800 51801 51802 51803 51804 51805)
Late/Upper Barremian130.0 - 125.45Italy Eucyrtis columbaria (51799)
Late/Upper Barremian - Early/Lower Aptian130.0 - 122.46Italy Eucyrtis columbaria (51795 51796 51797 51798)
Coniacian89.8 - 86.3Japan (Hokkaido) E. matsumotoi (96027 96029 96030 96032 96033)
Santonian86.3 - 83.6Russian Federation (Tambov) Eucyrtis sp. (95160 95161)
Santonian86.3 - 83.6Japan (Hokkaido) E. matsumotoi (96034 96036 96037 96038 96039 96040 96041)
Santonian - Early/Lower Campanian86.3 - 70.6Russian Federation (Tambov) Eucyrtis sp. (95159)
Late/Upper Santonian85.8 - 83.5Germany (Bayern) E. carnegiense (95841)
Middle Miocene15.97 - 11.608Ecuador E. sp. (90851)
Zanclean5.333 - 3.6Ecuador Theocorythium trachelium (90838)
Middle Pleistocene0.774 - 0.129Japan E. acuminata (233710 233711 233712) E. acuminata, Theocorythium trachelium (233640 233708 233709)
Middle Pleistocene - Late/Upper Pleistocene0.774 - 0.0117Japan E. acuminata (233713)
Late/Upper Pleistocene0.129 - 0.0117Japan E. acuminata (233714)