Classification: Acritax_Camb -> Annulum
Sister taxa: Acrum, Actinotodissus, Annulum, Archaeodiscina, Asteridium, Baltisphaeridium, Celtibarium, Comasphaeridium, Cristallinium, Cymatiogalea, Cymatiosphaera, Dasydiacrodium, Elektoriskos, Eliasum, Fimbriaglomerella, Frankea, Globosphaeridium, > >>

Daughter taxa: (blue => in age window 0-800Ma)


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:


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. & Gutierrez, M. (eds) I coloquio internacional de palinologia. Translated Title: First international palynological conference. Palinologia. Numero extraordinario. 1: 245-261. gs

Acritax - Acritax_Camb - Annulum by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-10-2019

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