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): 153-165.

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: 22-7-2018

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