Celleporaria triangula Seo, 1994

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

Celleporaria triangula Seo, 1994

( Figs 66–70 ; Table 15)

Celleporaria triangula Seo, 1994: 189 , pls 1, 2; Dick & Grischenko, 2017: 187, fig. 14f–h.

Figured material. RGM.1350561, early Pleistocene, Java.

Description. Colony encrusting, multiserial, multilaminar. Autozooids chaotically arranged, erect, deepbodied. Frontal shield convex, coarsely granular, with an uncertain number of subcircular, marginal areolar pores, 18–25 µm in diameter. Orifice transversely D-shaped with three tooth-like processes, squared or pointed, delineating asymmetrical pseudosinuses; squared condyles present in the proximal part of the anter. Two distolateral, oral spine bases may occur, about 15–20 µm in diameter. Suboral avicularium small, rounded triangular, facing frontally, directed distolaterally; crossbar complete. Interzooidal avicularia irregularly distributed, variable in size, rostrum rounded triangular, crossbar complete. Ooecium not observed.

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

Remarks. A single specimen of Celleporaria triangula was found in our samples. Celleporaria triangula is similar to C. cylincrocystis in having three tooth-like processes delineating two pseudosinuses of different size, but differs in possessing condyles which seem to be absent in C. cylindrocystis . Celleporaria triangula was first described from the East China Sea and off the coast of South Korea ( Seo 1994), and subsequently recorded off Sesoko Island in west-central Okinawa, Japan ( Dick & Grischenko 2017).

Figures

FIGURES 66–70. Celleporaria triangula Seo, 1994, RGM.1350561, early Pleistocene, Java. 66. General view of the colony fragment. 67. Close-up of an orifice showing the three tooth-like processes, condyles, and suboral avicularium. 68. Close-up of two zooids with oral spine bases. 69, 70. Close-ups of interzoodal avicularia. Scale bars: Fig. 66 = 400 µm; Figs 67, 69, 70 = 40 µm; Fig. 68 = 100 µm.