Clypeina sulcata (Alth)

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 : 29

Clypeina sulcata (Alth)

( Fig. 3 j-l)

This well known species, which may appear in the literature as Cl. jurassica Favre in Favre & Richard, is the second species of dasycladalean algae listed here that is mineralized with calcite instead of aragonite ( Conrad & Varol, 1990; Granier, 2012). It is found only in the lowermost Pierre Châtel Formation.

Figures

Fig. 3 a to l (scale bar: 500 µm): a oblique section of Zergabriella embergeri, Chambotte Fm, Upper Berriasian, sample 253; b oblique section of Triploporella? praturloni, "Calcaires roux", Lower Valanginian, sample 241; c oblique section of Triploporella? praturloni, "Calcaires roux", Lower Valanginian, sample 241.60; d tangential section of Zergabriella embergeri, Vions Fm, Upper Berriasian, sample 258; e transverse section of Zergabriella embergeri, Chambotte Fm, Upper Berriasian, sample 253; f oblique section of a verticil of Selliporella neocomiensis, transition Vions - Pierre Châtel formations, Middle-Upper Berriasian, sample 291.80; g oblique section of Falsolikanella danilovae, "Urgonien jaune", Upper Hauterivian, sample 116; h subaxial section of a verticil of Falsolikanella danilovae, "Urgonien jaune", Upper Hauterivian, sample 107; i oblique section of Dissocladella intercedens "Calcaires roux", Lower Valanginian, sample 241.60; j tangential section of a verticil of Clypeina sulcata, Pierre Châtel Formation, Middle Berriasian, sample 317; k oblique section of a verticil of Clypeina sulcata, Pierre Châtel Formation, Middle Berriasian, sample 317; l random sections of verticils of Clypeina sulcata, Pierre Châtel