Bathycrinus aldrichianus Thomson 1876
| Autor: | El��aume, Marc, Bohn, Jens-Michael, Roux, Michel, Am��ziane, Nadia |
|---|---|
| Rok vydání: | 2012 |
| Předmět: | |
| DOI: | 10.5281/zenodo.6180823 |
| Popis: | Bathycrinus aldrichianus Thomson, 1876 Figure 1; Table 1. Synonymy: Bathycrinus aldrichianus Thomson, 1876: 47 ���51, fig. 1; Bathycrinus campbellianus P. H. Carpenter, 1884: 238 ���240, fig. 15; Bathycrinus serratus A.H. Clark, 1908 b: 205 ���207, fig. 1; Bathycrinus aldrichianus Gisl��n, 1938: 15 ���16; 1951: 51���52, pl. (figs 1 ���2, 5); Macurda & Meyer, 1976: 647���667, figs. 1���5; pl. 1���5; A.M. Clark, 1977: 159���162, fig. 1g; Mironov, 2008: 143; Hess, 2011 a: T 153, fig. 75 (1m ���n). Material examined. Specimens from Pillsbury expedition, 1965, station P- 292 (Table 1), housed in the collections of the Smithsonian Institution, Washington D.C., catalogue number USNM E 17896. Complementary description of stalk articulations. In B. aldrichianus, the transition from relatively rigid mesistele to flexible dististele is rapid and restricted to the distalmost stalk. The ratio of columnal height to maximum diameter is> 2.8 (up to 3.6) in the mesistele and B. gracilis (Roux 1987: fig. 15 E) confirming that the two species are very closely related. As usual in bathycrinids, dististele synarthries are strongly oval with the longest diameter corresponding to a narrow fulcral ridge and wide ligamentary depressions (Fig. 1 F). The axial canal separates the fulcral ridge into two segments with sharp inner ends, and with dense calcite and regular rows of small crenulae (up to 15���18 on each segment) along their axes. Occurrence. B. aldrichianus is known from NW, central and SW Atlantic at depths ranging from 3317 to 5850 m, possibly from 3305 to 5860 m (Table 1). Published as part of El��aume, Marc, Bohn, Jens-Michael, Roux, Michel & Am��ziane, Nadia, 2012, Stalked crinoids (Echinodermata) collected by the R / V Polarstern and Meteor in the south Atlantic and in Antarctica, pp. 1-22 in Zootaxa 3425 on pages 3-4, DOI: 10.5281/zenodo.209419 {"references":["Thomson, C. W. (1876) Notice on new living crinoids belonging to the Apiocrinidae. Journal of the Linnean Society of London, 13, 47 - 55.","Carpenter, P. H. (1884) Report upon the Crinoidea collected during the voyage of H. M. S. Challenger during the years 1874 - 1876. Part I - General morphology, with description of the stalked crinoids, 11, 1 - 442.","Clark, A. H. (1908 b) New stalked crinoids from the eastern coast of North America. Proceedings of the United States national Museum, 34, 205 - 208.","Gislen, T. (1938) A revision of the recent Bathycrinidae, with a study of their phylogeny and geographical distribution. Lunds Universitets Arsskrift N. F., 34, 10, 1 - 30.","Macurda, D. B. & Meyer, D. L. (1976) The morphology and life habits of the abyssal crinoids Bathycrinus aldrichianus Wyville Thomson and its paleontological implications. Journal of Paleontology, 50, 4, 647 - 667.","Clark, A. M. (1977) Notes on deep-water Atlantic Crinoidea. Bulletin of the British Museum Natural History, Zoology, 31, 4, 159 - 186.","Mironov, A. N. (2008) Stalked crinoids of the family Bathycrinidae (Echinodermata) from the eastern Pacific. Invertebrate Zoology, 5, 2: 133 - 153.","Hess, H. (2011 a) Bourgueticrinina. In: Seldon P. (ed), Ausich W. I. (coordinating author) Treatise on Invertebrate Paleontology, Part T (Echinodermata 2, Revised), University of Kansas Press, Lawrence, Kansas 3: T 146 - 158.","Roux, M. (1987) Evolutionary ecology and biogeography of recent stalked crinoids as a model for the fossil record. In: Jangoux M. & Lawrence J. M. (Ed.) Echinoderm Studies. A. A. Balkema, Rotterdam, 2, 1 - 53."]} |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|