Pachynefocoenia danieli Reig Oriol, 1989

Löser, Hannes, 2012, Revision of the family Hemiporitidae (Scleractinia, Late Cretaceous), Geodiversitas 34 (2), pp. 399-407 : 404

Pachynefocoenia danieli Reig Oriol, 1989 ( Fig. 2J, K )

Pachynefocoenia danieli Reig Oriol, 1989: 9 , pl. 1, figs 1, 2, pl. 4, figs 3, 4.

Barysmilia iberica Baron-Szabo, 1998: 144 , pl. 6, figs 1-3; 2000: 114, pl. 8, figs 1, 3.

HOLOTYPE. — MGSB 47205 .

MATERIAL EXAMINED. — Holotype with two thin sections. Holotype of Barysmilia iberica (MB K1155) with two thin sections.

OCCURRENCE. — Early Late Campanian of Torallola ( Spain, Lérida, Com. Pallars Jussà, Mun. Pallars Jussà, Pobla de Segur), Late Campanian to Maastrichtian of Al Ain, Huwayyah Mt, SW corner and Al Madam, Faijyah Mt, southern tip ( United Arab Emirates, Al Ain).

DIMENSIONS

c min = 2.3-2.5- 3.1 mm.

c max = 2.4-3.0- 3.9 mm.

cl min = 1.8-2.4- 3.1 mm.

cl max = 1.7-1.9- 2.4 mm.

ccd = 2.2-2.7- 3.3 mm.

s = 20-30.

sd = 8/ 2 mm.

DESCRIPTION

Plocoid colony with rectangular, elliptical or circular calices. The rectangular or elliptical calices are the result of the beginning of intracalicinal budding. Septa compact and straight, often connected in the calicular centre forming a kind of incomplete crown. Septal faces smooth in the type material (Baron- Szabo 1998 reports fine thorns and granules). Septal symmetry generally regular in six systems and three cycles resulting in 24 septa, but this number can be lower in younger calices and higher in larger calices. Septal insertion as described by Baron- Szabo (1998: 144-145) could not be found in the type material. The septa of the various cycles are distinguished by thickness and length. Septa bicuneiform in outline, with short costae. The costae are non-confluent, but in places calices are connected to each other by a kind of apophyses. The wall is incomplete and septothecal, in places supported by thin dissepiments. The columella is strong and lamellar, often connected to septa of the first cycle. The endotheca is poorly developed and consists of thin subtabular dissepiments. The coenosteum is made of very thick tabulae. Microstructure not preserved in the type material.

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.