Alloiteaucoenia bernardina (Orbigny, 1850)

Löser, Hannes, Nieto, Luis M., Castro, José Manuel & Reolid, Matías, 2019, A Lower Valanginian coral fauna from the South Iberian Palaeomargin (Internal Prebetic, SE Spain), Palaeontologia Electronica (a 06) 24 (1), pp. 1-57 : 37-39

Alloiteaucoenia bernardina (Orbigny, 1850)

Figure 48

Material. MGB 83229, 83304; 6 thin sections.

v* 1850 Pseudocoenia bernardina Orbigny , p. 34

v 1979 Heliocoenia variabilis Etallon, 1859 ; Sikharulidze, p. 10, text-fig. 3, pl. 1, fig. 1, pl. 4, fig. 1

v 2016 Pseudocoenia bernardina Orbigny, 1850 ; Löser, fig. P125

2018 Heliocoenia variabilis Etallon, 1859 ; Ricci, Lathuilière and Rusciadelli, p. 469 pl. 16, fig. 1-4

Dimensions. See Table 40.

Remarks. Pseudocoenia was originally established by Orbigny (1850) as a “ Cryptocoenia with eight systems”, which means a Cryptocoenia with a basic septal symmetry of eight. Wells (1936) designated the type species and selected a lectotype.

This lectotype does not correspond to the original description of Orbigny. An attempt to correct this

LÖSER ET AL.: SPANISH VALANGINIAN CORALS

n min-max µ s cv µ±s clmin 30 0.97-1.75 1.45 0.19 13.4 1.25-1.64

clmax 30 1.02-1.93 1.52 0.20 13.7 1.31-1.73

ccd 30 2.01-3.59 2.76 0.43 15.9 2.32-3.20

s 10 7 -17 11.8 3.55 30.1 8-15

mistake by a decision of the International Commission on Zoological Nomenclature failed (Löser, 2007; Anonymous, 2013). The above mentioned lectotype (figured in Löser, 2016) shows characteristics that were later assigned to Heliocoenia Etallon, 1859 and Alloiteaucoenia . In order to avoid further confusion, we discard Pseudocoenia and prefere to use Alloiteaucoenia . The type material of its type species is available and was recently depicted (Löser, 2016). The type material of the type species of Heliocoenia is not available, and the illustration in Etallon (1859) gives no information.

Occurrence. Oxfordian of France (Ain) Nantua, Landeyron ( MNHN R09199 ); Charix ( MJSN S2247 ). Kimmeridgian to Tithonian of Italy (Abruzzi, L’Aquila) Scanno, Monte Rotondo. Tithonian to Berriasian of Georgia (Racha) Tskhanari. Upper Tithonian of Austria (Oberösterreich) Ewigen Wand N Bad Goisern ( HJGL nn) .

Figures

FIGURE 48. Alloiteaucoenia bernardina (Orbigny, 1850), MGB 83304. 1: transversal thin section. 2: transversal thin section, detail. 3: longitudinal thin section. Scale 1 mm.