AnimaliaacceptedgenusAccepted
Vasopora

Vasopora

Grischenko, Gordon & Melnik, 2021

GBIF:188539271

0year

ABOUT

Descriptions(3)

Diagnosis. Colony erect, pedunculate, miniature, with flaring, convex capitulum on thin and tall column, with sharp structural boundary between column and capitulum. Autozooidal peristomes short, radiating in one irregular whorl. Capitulum surface mostly comprising openings of kenozooid-like alveoli, conferring a reticulate appearance. Gonozooid unidirectional in capitulum center, sac-like, convex, covered by reticular meshwork of small alveoli. Ooeciostome negligible, ooeciopore transversely subcircular, on slope of gonozooid, facing outwards laterally. Entire capitulum surface minutely densely granular to subspinulate. Skeletal microstructure comprising irregularly imbricated crystallites. Vasiform column smooth, exterior-walled, lacking pseudopores, with even upper margin (outer rim). Surface microstructure comprising planar-spherulitic strips and fans of closely appressed acicular crystallites parallel to wall surface. Ancestrula erect, with peristome arising from entire roof of protoecial dome. First daughter zooid also buds from protoecium.
Grischenko, Andrei V., Gordon, Dennis P., Melnik, Viacheslav P. (2021): Vasopora ceramica n. gen., n. sp. - a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean. Zootaxa 5047 (4): 444-452, DOI: 10.11646/zootaxa.5047.4.4
Etymology. Latin vas, vase, alluding to the vasiform colony form, plus - pora, a common bryozoan suffix. Gender feminine.
Grischenko, Andrei V., Gordon, Dennis P., Melnik, Viacheslav P. (2021): Vasopora ceramica n. gen., n. sp. - a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean. Zootaxa 5047 (4): 444-452, DOI: 10.11646/zootaxa.5047.4.4
Type species. Vasopora ceramica n. sp.
Grischenko, Andrei V., Gordon, Dennis P., Melnik, Viacheslav P. (2021): Vasopora ceramica n. gen., n. sp. - a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean. Zootaxa 5047 (4): 444-452, DOI: 10.11646/zootaxa.5047.4.4

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Source Information

Vasopora ceramica n. gen., n. sp. - a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean

checklist

This dataset contains the digitized treatments in Plazi based on the original journal article Grischenko, Andrei V., Gordon, Dennis P., Melnik, Viacheslav P. (2021): Vasopora ceramica n. gen., n. sp. - a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean. Zootaxa 5047 (4): 444-452, DOI: 10.11646/zootaxa.5047.4.4

Abstract

A new abyssal cyclostome bryozoan genus and species, Vasopora ceramica n. gen., n. sp., is described from the eastern Russian exploration area of the Clarion– Clipperton Fracture Zone based on newly collected material from Yuzhmorgeologiya GLD4–19 station 421 (13.23408° N, 134.22180° W, 4809 m depth). Generic characters include an erect pedunculate colony with a distinct boundary between column and flared capitulum, short autozooidal peristomes in a single whorl, numerous alveoli, a central unidirectional sac-like gonozooid covered by a surficial network of crossed ridges continuous with adjacent rims of alveoli, a laterally opening ooeciopore, and the entire capitulum surface being minutely densely granular to subspinulate. Whereas the skeletal microstructure of the capitulum surface comprises irregular imbricated crystallites, the column has a planar-spherulitic fabric of acicular crystallites in fan-like arrays, and there are no pseudopores. The sharp boundary between capitulum and column, with their different microstructure separates Vasopora n. gen. from the two existing genera of Alyonushkidae that are found in the same environment. Vasopora n. gen. has a stalk formed of calcified exterior wall, whereas it is interior-walled in Alyonushka and Calyssopora.

Grischenko A V, Gordon D P, Melnik V P, plazi (2021). Vasopora ceramica n. gen., n. sp. - a new abyssal cyclostome bryozoan from polymetallic nodules in the Russian exploration area, Clarion-Clipperton Fracture Zone, eastern Pacific Ocean. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.11646/zootaxa.5047.4.4 accessed via GBIF.org on 2026-06-14.

CC0Published 10/1/2021View dataset
GBIF Usage Key
188539271
Dataset Key
013b5b50-ab43-4199-89dd-d4996515754b
Origin
source
Backbone Key
11371027
Taxon ID
20051D752E26FFC4D1F6ECB40A67DD31.taxon
Last Crawled
6/9/2026
Last Interpreted
6/9/2026