Scaleniadiacrodium

Name

Scaleniadiacrodium

Rank

Genus

Authors (Pub.)

Potter T. L. Pedder B. E. Feist-Burkhardt S.  

Publication

Cambrian Furongian Series acritarchs from the Comley area, Shropshire, England [2012/2]

Journal

Journal of Micropalaeontology

Volume

31

Issue

1

Page number

17

Year

2012

Parent Taxon

[Unranked] Acritarcha

Fossil Status

vesicles

Type

Scaleniadiacrodium comleyense

Diagnosis

The vesicle outline is elongate-triangular (isosceloid) with rounded apices. The wall of both vesicle and processes is single-layered, shagreenate or with a finely granular ornament. The process distribution is ‘heteropolar’. The antapical pole bears a single, simple, hollow process tapering to a closed, pointed tip. The process cavity freely communicates with the vesicle cavity. A morphologically similar process, of approximately equal or longer length, is located at one of the apices of the antapical pole, arising at an angle to the polar axis. There may be no additional processes or one or a small number of ‘secondary’ processes, often concentrated in the neighbourhood of the antapical polar angle not bearing the ‘primary’ process, and often not in the same plane as the two primary processes. The ‘secondary’ processes are considerably smaller than the ‘primary’ processes, have a similar morphology to the ‘primaries’ but may be solid. No excystment opening has been observed.