Notioceramus Fisher 1940 ...
Notioceramus Fisher, 1940 Notioceramus Fisher, 1940: 119; Mah 2011: 32. Diagnosis Body stellate. Abactinal, marginal, and actinal surface densely covered by large, coarse, hemispherical granules that nearly obscure plate boundaries. Body wall thin, parchment like. Marginal plates with lateral facing...
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Zenodo
2023
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| Online Access: | https://dx.doi.org/10.5281/zenodo.8090150 https://zenodo.org/record/8090150 |
| Summary: | Notioceramus Fisher, 1940 Notioceramus Fisher, 1940: 119; Mah 2011: 32. Diagnosis Body stellate. Abactinal, marginal, and actinal surface densely covered by large, coarse, hemispherical granules that nearly obscure plate boundaries. Body wall thin, parchment like. Marginal plates with lateral facing. Furrow spines two to three, subambulacrals large. Comments The two new species of Notioceramus described here were collected from substantially deeper habitats than the type species, Notioceramus anomalus Fisher, 1940, which has been recorded primarily from 342–750 m (Fisher 1940; A.M. Clark 1962). In contrast, the new species described herein Notioceramus abyssalis n. sp. and Notioceramus neillae n. sp. were collected from abyssal depths (2324–3876 m). A trend in the degree to which features were calcified was observed between the deepest and shallowest species. The deepest occurring individuals of Notioceramus abyssalis n. sp. showed more tapering arms, granules with spinose surfaces, fewer granules overall, ... : Published as part of Mah, Christopher L., 2023, New Genera, Species, and observations on the biology of Antarctic Valvatida (Asteroidea), pp. 1-88 in Zootaxa 5310 (1) on page 33, DOI: 10.11646/zootaxa.5310.1.1, http://zenodo.org/record/8090240 ... |
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