Rajkaella Dragastan & Bucur

Granier, Bruno, Clavel, Bernard, Charollais, Jean & MarcWeidmann, 2014, Latest Jurassic - Early Cretaceous Dasycladalean Algae (Chlorophyta) From The Morand Drilling At Montricher (Canton Of Vaud, Switzerland), Acta Palaeontologica Romaniae 10 (1 - 2), pp. 1-2 : 32

Genus Rajkaella Dragastan & Bucur

The dispute regarding this taxon ( Granier, 1987 b, 1990, 1991; Dragastan & Bucur, 1988, 1993) ended almost as quickly as it started with the adoption of the generic name Rajkaella to replace " Radoiciciella " ( Granier & Deloffre, 1993). The genus differs from Pseudoclypeina Radoičić because the primary laterals of a verticil are clearly separated in their proximal part. We identified two representatives of the genus in the cores analysed.

Rajkaella bartheli (Bernier)

( Fig. 4 a-b, g-k)

This species has rather large secondary laterals. It is found only in Vions Formation.

Figures

Fig. 4 a to n (scale bar: 500 µm): a random sections of laterals of Rajkaella bartheli, transition Pierre Châtel - Goldberg formations, Lower-Middle Berriasian, sample 320; b section of a lateral of Rajkaella bartheli, transition Pierre Châtel - Goldberg formations, Lower-Middle Berriasian, sample 320; c transverse section of a charophyte stalk, Charaxis sp., Goldberg Fm, Lower Berriasian, sample 324; d axial sections of charophyte stalks, Charaxis sp., Goldberg Fm, Lower Berriasian, sample 325; e transverse section of a charophyte stalk, Goldberg Fm, Lower Berriasian, sample 325; f axial section of a charophyte oogonium, Goldberg Fm, Lower Berriasian, sample 321; g tufts of secondary laterals of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 303; h tufts of secondary laterals of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 316; i section of a lateral of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 319; j tufts of secondary laterals of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 303; k section of a lateral of Rajkaella bartheli, Pierre Châtel Formation, Middle Berriasian, sample 319; l deep tangential section of a verticil of Actinoporella sp. (note: the corona structure is visible), "Urgonien jaune", Upper Hauterivian, sample 114; m oblique section of a verticil of Actinoporella sp., Pierre Châtel Formation, Middle Berriasian, sample 319; n