Laminopora cf. dubia ( BUSK , 1859)

ZÁGORŠEK, KAMIL, 2010, BRYOZOA FROM THE LANGHIAN (MIOCENE) OF THE CZECH REPUBLIC PART II: SYSTEMATIC DESCRIPTION OF THE SUBORDER ASCOPHORA LEVINSEN, 1909 AND PALEOECOLOGICAL RECONSTRUCTION OF THE STUDIED PALEOENVIRONMENT, Acta Musei Nationalis Pragae Series B 66 (3 - 4), pp. 139-255 : 139-255

publication ID	https://doi.org/ 10.5281/zenodo.13344847
DOI	https://doi.org/10.5281/zenodo.13227620
persistent identifier	https://treatment.plazi.org/id/316187B2-5321-FFBC-078D-FDB72F82F80B
treatment provided by	Felipe
scientific name	Laminopora cf. dubia ( BUSK , 1859)
status

Treatment

Laminopora cf. dubia ( BUSK, 1859)

Pl. 80, Fig. 1-6

?v. * 1859 Flustra (?) dubia n.sp. – Busk p. 132, pl. 1, fig. 3

1988 Schizostomella View in CoL (?) dubia ( BUSK, 1859) – Moissette p. 176, pl. 28, fig. 8

v. 2007 Laminopora dubia ( BUSK, 1859) – Zágoršek et al. p. 212, Fig. 10A-C

T y p e: The probable holotype is stored in the NHM London under the number D 54018 (Taylor, 2008 – pers. com.) .

M a t e r i a l: Altogether 17 specimens were studied form different localities.

D i a g n o s i s: Colonieserect,bilaminar,autozooecia arranged in regular longitudinal rows. Autozooecia oval with a flat perforated frontal wall and very long apertures (length about 100 µm). The sinus of the aperture is narrow, but long with prominent condyles. Areolar pores almost identical with frontal pores and also occurring distally from the aperture. Avicularia suboral, situated proximally, on right or left side of the aperture. No ovicells observed.

R e m a r k s: Thanks to Dr. Taylor (NHM London), I was able to study the possible type material in Busk’s collection. The specimen (illustrated here on Pl. 80, Fig. 3 and 4 – documented by Taylor under the number pdt7587 and pdt7588) was probably illustrated by Busk (1859) in his plate 1, figure 3. This possible type has no preserved frontal wall and the lateral walls are badly preserved. The general appearance is however identical with our specimens as described here .

The species is perhaps bi-mineral, lateral walls are calcitic, frontal walls are probably aragonitic. Many authors (among others Moissette, 1988; Haddadi-Hamdane, 1996) use the name Schizostomella (?) dubia ( BUSK, 1859) for colonies showing only lateral walls. Therefore, I retain this name and due to the preserved frontal wall the species is listed under Laminopora . Details regarding the generic attribution may be found in Zágoršek et al. (2007). As the types do not show the frontal wall, an exact determination is impossible.

Superfamily Lepralielloidea VIGNEAUX, 1949