Trechmannaria Wells, 1935

Löser, Hannes, 2013, Revision of the family Felixaraeidae (Scleractinia; Cretaceous), Geodiversitas 35 (4), pp. 747-765 : 761

Genus Trechmannaria Wells, 1935

TYPE AND ONLY SPECIES. — Trechmannaria montanaroae Wells, 1935 by original designation.

DIAGNOSIS. — Meandrinoid colony. Calicular rows short and straight. Calices distinct. Calicular rows wide. Radial elements perforated. Microstructure of large trabeculae. Radial elements in cross-section externally thick, becoming thinner towards the centre, first generation disproportionately thicker than other generations. Symmetry of radial elements irregularly radial. Cycles of radial elements subregular. Septal generations differ in length and thickness. First septal generation reaches to the centre of the calice, further generations are subsequently shorter. Radial elements free. Septal upper border unknown, lateral face with thorns, inner margin smooth. Costae confluent. Synapticulae abundant. Columella poorly defined, probably some granules. Valley septa present Endotheca consists of dissepiments. Wall absent. Coenosteum broad, consisting of costae. Budding intracalicinal, polystomedal, and complete.

RANGE. — Latest Campanian.

DISTRIBUTION. — Western Atlantic.

Trechmannaria montanaroae Wells, 1935 ( Fig. 3J, K )

Trechmannaria montanaroae Wells, 1935: 190 , pl. 11, figs 2, 3 (v).

MATERIAL EXAMINED. — NHM R30284 (holotype).

DIMENSIONS. — See Table 4.

OCCURRENCE. — Latest Campanian of Jamaica (Portland) Moore Town.

Figures

FIG. 3. — A-C, Pseudofavia grandiflora (Reuss, 1854), GPS FLX 1100; A, transversal thin section; B, transversal thin section, detail; C, longitudinal thin section; D-F,?Pseudofavia adkinsi (Wells, 1934); D, holotype of Synastrea adkinsi Wells, 1934 (USNM I-74483) transversal slab; E, USNM #548a, transversal thin section; F, USNM #548a, transversal thin section,detail; G, Pseudofavia paronai (Zuffardi-Comerci, 1930), holotype of Thamnasteria paronai (PU 9066), transversal thin section; H, I, Thecoseriopsis corbariensis Al- loiteau,1952,syntypes of Thecoseriopsis corbariensis (MNHN.F.R10941); H, oral view; I, transversal thin section; J, K, Trechmannaria montanaroae Wells, 1935, Holotype of Trechmannaria montanaroae (NHM R30284); J, transversal slab; K, transversal slab, detail. Scale bars: A-C, E, H-K, 10 mm; D, G, 5 mm; F, 3 mm.