Cerionefocoenia iberica Reig Oriol, 1995

Löser, Hannes, 2012, Revision of the family Hemiporitidae (Scleractinia, Late Cretaceous), Geodiversitas 34 (2), pp. 399-407 : 402

Cerionefocoenia iberica Reig Oriol, 1995 ( Fig. 2 G-I)

Cerionefocoenia iberica Reig Oriol, 1995: 24 , pl. 3, figs 3, 4.

HOLOTYPE. — MGSB 55826 .

MATERIAL EXAMINED. — Holotype with two thin sections.

OCCURRENCE. — Early Late Campanian of Puigmanyons (Lérida, Com. Pallars Jussà, Mun. Pallars Jussà, Pobla de Segur).

DIMENSIONS

cl min = 0.9-1.1- 1.4 mm.

cl max = 1.2-1.9- 2.7 mm.

ccd = 1.5-1.9- 2.2 mm.

s = 20-30.

sd = 10-11/ 2 mm.

DESCRIPTION

Cerioid colony with polygonal and often elongated calices that give the colony a meandrinoid appearance, even though each calicular pit normally has only one centre. Two centres may be present when one calice is about the divide into two calices. Septa thick and compact, generally free, but often connected to the columella. Their symmetry is radial, but irregular. Generations differ in length. Normally a first cycle reaches to the columella, and a second is only preserved as very short ridges. Septal faces smooth.The costae are confluent to non-confluent. The septothecal wall is incomplete, so that calices communicate through gaps in the wall. The columella is thick, lamellar and very often connected to septa. The columella can have small thorns that look like septa of the second generation proposing septal budding but this is not the case. The endotheca is poorly preserved and consists of few dissepiments.

Figures

FIG. 2. — A-F, Hemiporites jacobi Alloiteau, 1952: A-E, holotype MNHN.F.R10937 (transverse thin section); F, unnumbered thin section that may belong to the holotype (longitudinal thin section); G-I, Cerionefocoenia iberica Reig Oriol, 1995, holotype MGSB 55826; G, H, transverse thin sections;I, longitudinal thin section;J-L, Pachynefocoenia danieli Reig Oriol,1989,holotype MGSB 47205.Scale bars: A-C, F-L, 2 mm; D, E, 500 µm.