Celleporaria cylindrocystis Tilbrook, 2006

Martino, Emanuela Di & Taylor, Paul D., 2018, Early Pleistocene and Holocene bryozoans from Indonesia, Zootaxa 4419 (1), pp. 1-70 : 24-25

publication ID

https://doi.org/ 10.11646/zootaxa.4419.1.1

publication LSID

lsid:zoobank.org:pub:03CAFD21-185F-4C86-ACC3-8CEB61E7F7DD

DOI

https://doi.org/10.5281/zenodo.3799558

persistent identifier

https://treatment.plazi.org/id/CF6D87AA-E859-D256-FF7D-FEFE0819FC5A

treatment provided by

Plazi

scientific name

Celleporaria cylindrocystis Tilbrook, 2006
status

 

Celleporaria cylindrocystis Tilbrook, 2006

( Figs 62–65 View FIGURES 62–65 ; Table 14)

Celleporaria cylindrocystis Tilbrook, 2006: 145 , pl. 27D–F.

Figured material. RGM.1350559, early Pleistocene, Java; RGM.1350560, Holocene, UPGG 041, off South Sulawesi.

Description. Colony encrusting, multiserial, becoming multilaminar through frontal budding. Basal autozooids irregularly polygonal, distinct with shallow interzooidal furrows, longer than broad (mean L/W = 1.13); frontally budded autozooids irregularly arranged, erect, deep-bodied. Frontal shield convex, slightly nodular, with 6–8 irregularly spaced, subcircular areolar pores, 15–25 µm in diameter. Orifice subcircular with three tooth-like processes, squared or pointed, delineating asymmetrical pseudosinuses; condyles absent. Two distolateral, oral spine bases may occur, about 15 µm in diameter. Suboral avicularium small, elliptical, facing frontally, directed proximally, often placed at the apex of a raised cylindrical structure; crossbar complete. Interzooidal avicularia irregularly distributed, variable in size, spatulate or elliptical. Ooecium hood-like, broader than long, slightly nodular like the frontal shield, imperforate.

Remarks. A half-dozen fragments of Celleporaria cylindrocystis were found in our samples. This species was described for the first time from the Solomon Islands but specimens previously assigned to Celleporaria tridenticulata ( Busk, 1881) may belong to this species ( Tilbrook 2006). Celleporaria cylindrocystis is distinguished by the three tooth-like processes in the orifice, the presence of oral spines, and the suboral avicularium placed on a cylindrical cystid. The latter character is unique to this species in the genus Celleporaria ( Tilbrook 2006) . The Pleistocene specimens differ from the holotype specimen in having fewer marginal areolar pores.

N, Number of colonies and number of zooids measured; SD, standard deviation; Av, avicularium; Int, interzooidal.

RGM

National Museum of Natural History, Naturalis

Kingdom

Animalia

Phylum

Bryozoa

Class

Gymnolaemata

Order

Cheilostomatida

Family

Lepraliellidae

Genus

Celleporaria

Loc

Celleporaria cylindrocystis Tilbrook, 2006

Martino, Emanuela Di & Taylor, Paul D. 2018
2018
Loc

Celleporaria cylindrocystis

Tilbrook, K. J. 2006: 145
2006
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