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Xitus

Protozoa - Nassellaria - Xitidae

Taxonomy
Xitus was named by Pessagno (1977) [Sepkoski's age data: J Tith K Maes].

It was assigned to Xitidae by Kiessling (1995); and to Nassellaria by Sepkoski (2002).

Synonymy list
YearName and author
1977Xitus Pessagno
1995Xitus Kiessling
2002Xitus 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
familyXitidaePessagno 1977
genusXitusPessagno 1977

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. †Xitus Pessagno 1977
show all | hide all
†Xitus alievi Foreman 1973
†Xitus antelopensis Pessagno 1977
†Xitus asymbatos Foreman 1968
†Xitus gifuensis Mizutani 1981
†Xitus magnus Baumgartner 1995
†Xitus mosquensis Vishnevskaya and De Wever 1998
†Xitus pulcher Pessagno 1977
†Xitus reticulatus Hori 1999
†Xitus singularis Hull 1997
†Xitus spicularius Aliev 1961
†Xitus takayanagii Taketani 1982
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: base of the Late/Upper Bajocian to the top of the Campanian or 171.60000 to 72.10000 Ma

Collections (270 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Late/Upper Bajocian171.6 - 167.7Japan X. sp. A, X. sp. B (51714)
Middle Bathonian167.7 - 164.7Switzerland X. sp. 1 (66940) X. sp. 1, X. singularis (66939)
Late/Upper Bathonian - Early/Lower Callovian167.7 - 161.2Italy X. sp. A (51086 51087)
Callovian166.1 - 163.5Italy X. spineus, X. spicularius (47164)
Callovian166.1 - 163.5USA (California) X. singularis (50737 50738)
Late/Upper Callovian164.7 - 161.2Germany (Bavaria) X. pulcher (66976)
Late/Upper Callovian - Oxfordian164.7 - 157.3New Zealand X. sp. (53784)
Late/Upper Callovian - Early/Lower Oxfordian164.7 - 155.7Philippines X. sp. (52070)
Oxfordian163.5 - 157.3Italy X. spicularius (47168)
Late/Upper Oxfordian161.2 - 155.7Switzerland X. spicularius (47162)

Youngest occurrences
Time interval Ma Country or state PBDB collection number
Santonian86.3 - 83.6Japan (Hokkaido) Stichomitra asymbatos (95788 96034 96036 96037 96038 96039 96040 96041) Stichomitra asymbatos, X. takayanagii (96042)
Santonian - Early/Lower Campanian86.3 - 70.6Russian Federation (Tambov) X. asymbatos (95159)
Santonian - Early/Lower Campanian86.3 - 70.6Russian Federation (Oryol) X. asymbatos (95163)
Late/Upper Santonian85.8 - 83.5Germany (Bayern) X. alius, X. mirus, X. plenus, X. asymbatos (95841)
Late/Upper Santonian - Early/Lower Campanian85.8 - 70.6Russian Federation (Moskovskaya Oblast) X. asymbatos (95981)
Campanian83.6 - 72.1Turkey X. asymbatos (130990)
Campanian83.6 - 72.1Japan (Hokkaido) Stichomitra asymbatos (96046) Stichomitra asymbatos, X. takayanagii (96045)
Early/Lower Campanian83.5 - 70.6Poland X. sp. A, X. sp. B, X. sp. C, X. spicularius, X. asymbatos, X. antelopensis (95794)
Early/Lower Campanian83.5 - 70.6Japan (Hokkaido) X. takayanagii (95789)
Late/Upper Campanian83.5 - 70.6Japan (Wakayama) X. grandis (95764)