Citation
Barattolo, Filippo; Carras, Nicola; Conrad, Marc; Radoičić, Rajka (2018), Data from: Falsolikanella campanensis (Azéma & Jaffrezo) revisited on type material, evidence of polyphysacean nature (green algae), Dryad, Dataset, https://doi.org/10.5061/dryad.664h2vf
The genus Falsolikanella Granier was introduced by Granier (1987) based on the basal Cretaceous species Likanella campanensis Azéma & Jaffrezo (1972), and assigned to the tribe Diploporeae (Pia) within the green alga order Dasycladales. Later, other species were assigned to Falsolikanella. Sections of the type-specimens of Likanella campanensis are reviewed. They show that in this species, the arrangement of the laterals is not metaspondyl, but typical of the genus Actinoporella (Gümbel), with coronae arising from a single primary lateral. Therefore, the species is assigned to the genus Actinoporella within the tribe Acetabularieae Decaisne, family Polyphysaceae Kützing, and the generic attribution of other species previously assigned to Falsolikanella is discussed.
Supplemental_Data_text
Text describes estimation of w from oblique sections and the “couple of pores” method.
Supplemental_Data_fig_1
Supplemental Data Figure 1. Relationships among sections of a typical cylindrical calcareous skeleton of Dasycladales with euspondyl, acrophorous primary laterals. (1) oblique section; a, intercept of a whorl close to the central cavity; b, general intercept of a whorl. (2) axial section showing the oblique section (dashed line) corresponding to 1. (3) schematic drawing of 4; (4) transversal section; a”, b” intercepts of a and b of 1 respectively. See Supplemental data set for comments.
Supplemental_Data_fig_2
Supplemental Data Figure 2. Calculation of α and α’ from an oblique section. (1) oblique section: whorl w’1 is intersected close to the central cavity; generic whorl w’2 is cut amid the calcareous skeleton. (2) intercepts of w’1 and w’2 whorls in transversal section. (3) number of pores valued along two generic whorls (1 and 2) cut amid the calcareous skeleton. OD/OB = O’D’/O’B’= k, central cavity-intercept ratio. See Supplemental text for comments.
Supplemental_Data_fig_3
Supplemental Data Figure 3. Actinoporella campanensis (Azéma & Jaffrezo) n. comb. Reference oblique section, the holotype, used to estimate the number of pores (w) per whorl.
Supplemental_Data_table_1
Supplemental Data Table 1. Estimate of w values based on the holotype of Actinoporella campanensis (Azéma & Jaffrezo) n. comb. d, inner diameter; D, outer diameter; k, central cavity-intercept ratio (see Supplemental data set); w’, number of laterals cut by the intercept; w, number of laterals in a whorl.
