Microporella tonkinensis Dick & Ngai & Doan 2020, n. sp.
In: Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam, pp. 201-252 in Zootaxa 4747(2) 227-228, 2020
unknown
Zugriff:
Microporella tonkinensis n. sp. (Fig. 12 A–D) urn:lsid:zoobank.org:act: D8480B51-CC0D-4B7B-B038-581C87933ADC Etymology. The specific name comes from the Gulf of Tonkin, wherein lies the Co To island group. Material examined. Holotype, VNMN-0248 (CT-6); paratype, VNMN-0249 (CT-41); both on SEM stubs. Measurements. Holotype, VNMN-0248: AzL, 0.43–0.59 (0.513 ± 0.050); AzW, 0.28–0.48 (0.357 ± 0.051); OrL, 0.062 –0.074 (0.068 ± 0.003); OrW, 0.106 –0.124 (0.113 ± 0.005); OvL, 0.19–0.23 (0.207 ± 0.011); OvW, 0.23–0.27 (0.260 ± 0.011); AvRL, 0.090 –0.114 (0.102 ± 0.007); AvRW, 0.046 –0.063 (0.053 ± 0.006) (n = 15, 1). Paratype, VNMN-0249: AzL, 0.34–0.49 (0.428 ± 0.039); AzW, 0.23–0.38 (0.294 ± 0.043); OrL, 0.056 –0.072 (0.066 ± 0.004); OrW, 0.087 –0.104 (0.098 ± 0.005); AvRL, 0.068 –0.092 (0.082 ± 0.007); AvRW, 0.038 –0.057 (0.046 ± 0.005) (n = 15, 1). Diagnosis. Orifice with straight, weakly denticulate proximal margin; small condyles mediad to proximolateral corners of orifice. Modal number of oral spines four or five; spine bases often evident in zooids away from colony margin. Ascopore non-cribriform, without conspicuous umbo; pustulation between ascopore and orifice. Avicularia lateral or proximolateral to ascopore, one per zooid, small relative to orifice size. Non-personate, non-ribbed ooecium retaining pair of spines at proximolateral corners. Description. Colony unilaminar, encrusting, sheet-like. Zooids irregularly hexagonal, distinct, delineated by groove. Frontal wall markedly convex, with two to five small, inconspicuous areolae along each lateral margin; perforated over entire surface by small pseudopores, except in zone between ascopore and orifice; texture uniformly coarsely pustulose between pores; pustules usually present between ascopore and orifice, sometimes in discrete row. Orifice broader than long, broadly D-shaped, surrounded by low, smooth rim; proximal margin straight or slightly concave between conspicuous triangular condyles; condyles positioned slightly mediad to proximolateral corners of ...
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Microporella tonkinensis Dick & Ngai & Doan 2020, n. sp.
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Autor/in / Beteiligte Person: | Dick, Matthew H. ; Ngai, Nguyen Danh ; Doan, Hung Dinh |
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Zeitschrift: | Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam, pp. 201-252 in Zootaxa 4747(2) 227-228, 2020 |
Veröffentlichung: | 2020 |
Medientyp: | unknown |
DOI: | 10.5281/zenodo.3703680 |
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