Parataxospermum, Z.M.Li, 1993

Galtier, Jean, Ronchi, Ausonio & Broutin, Jean, 2011, Early Permian silicified floras from the Perdasdefogu Basin (SE Sardinia): comparison and bio-chronostratigraphic correlation with the floras of the Autun Basin (Massif central, France), Geodiversitas 33 (1), pp. 43-69 : 62-63

publication ID

https://doi.org/ 10.5252/g2011n1a4

DOI

https://doi.org/10.5281/zenodo.4607921

persistent identifier

https://treatment.plazi.org/id/5328C915-CD7D-0D05-B74D-0470AC17B10F

treatment provided by

Felipe

scientific name

Parataxospermum
status

 

cf. Parataxospermum ( Fig. 9I View FIG )

Dispersed cardiocarpalean ovules of this type are the most common, occurring in about 1/10 of specimens.

They are up to 1 mm long and 6 × 5 mm wide. They are characterized by a prominent sclerotesta up to 1 mm thick composed of large thick-walled cells 50 to 200 µm in diameter gradually decreasing in size in the outermost sclerotesta and near the base of the ovule. Detailed description of these ovules will be presented in another paper but it is worth mentioning that they are most similar with ovules from Carboniferous-Permian coal balls from Shanxi Province in China described by Li (1993).

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