Syracosphaera


Classification: Mesozoic -> Syracosphaerales -> Syracosphaeraceae -> Syracosphaera
Sister taxa: Syracosphaera,


Daughter taxa (blue => in age window 0-300Ma)
Rim very narrow; rhomboidal central plate 
Rim well-developed, wide lath cyle cycle, longitudinal bar

Taxonomy:

Citation: Syracosphaera Lohmann 1902
Rank: Genus
Notes & discussion: Syracosphaera is a characteristic extant taxon with only a spotty fossil record. Nonetheless occurences down to the Eocene are now well-established. Turonian specie illustrated and decribed by Bown et al. 2017 appear to extend rage into the Cretaceous and some Stradnerlithus species appear very similar.

Farinacci & Howe catalog pages: Syracosphaera + *

See also: Thurmannolithion ;Stradnerlithus clatriatus ;Stradnerlithus wendleri ;Diductius constans - Mesozoic species with strong similarities to Syracosphaera;

Geological Range:
Last occurrence (top): within Turonian Stage (89.77-93.90Ma, top in Turonian stage). Data source: Total of range of species in this database
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P.R.; Lees, J.A. & Young, J.R., (2017). On the Cretaceous origin of the Order Syracosphaerales and the genus Syracosphaera. Journal of Micropalaeontology, 36(2).

Lohmann, H., (1902). Die Coccolithophoridae, eine Monographie der Coccolithen bildenden Flagellaten, zugleich ein Beitrag zur Kenntnis des Mittelmeerauftriebs. Archiv für Protistenkunde, 1: 89-165.


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Syracosphaera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-1-2018

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