Annulum


Classification: Acritax_Camb -> Annulum
Sister taxa: << < Lusatia, Micrhystridium, Multiplicisphaeridium, Ninadiacrodium, Polygonium, Reticella, Retisphaeridium, Scalenadiacrodium, Skiagia, Stelliferidium, Thymadora, Timofeevia, Trunculumarium, Virgatasporites, Vulcanisphaera, Annulum,


Daughter taxa: (blue => in age window 0-300Ma)


Taxonomy:

Citation: Annulum Fombella 1978
Rank: genus
Type species: Annulum difuminatum Fombella 1978
JWIP Catalog pages: Annulum *

Geological Range:
Last occurrence (top): within Cambrian Period (485.37-541.00Ma, top in Age 10 stage). Data source:
First occurrence (base): within Cambrian Period (485.37-541.00Ma, base in Fortunian stage). Data source:

Plot of occurrence data:

References:

Fombella, M.A., (1978). Acritarcos de la Formacion Oville, edad Cambrico medio-Tremadoc, Provincia de Leon, Espana. Translated Title: Acritarchs from the Oville Formation, Middle Cambrian-Tremadocian of Leon Province, Spain. In: Cramer, F.H., Diez, M.d.C.R. and Gutierrez, M. (Editors), I coloquio internacional de palinologia. Translated Title: First international palynological conference. Palinologia. Numero extraordinario. 1, pp. 245-261.


Acritax - Acritax_Camb - Annulum by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-12-2018

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