Allocyrtium Afanasieva, 1986
publication ID |
https://doi.org/ 10.5252/g2017n3a4 |
publication LSID |
urn:lsid:zoobank.org:pub:603CD230-5931-4506-A122-9CBC2F89189F |
persistent identifier |
https://treatment.plazi.org/id/0A488798-6A0C-455D-FEB5-FA7E08AFAE01 |
treatment provided by |
Felipe |
scientific name |
Allocyrtium Afanasieva, 1986 |
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Allocyrtium Afanasieva, 1986: 31 .
TYPE SPECIES. — Archocyrtium castuligerum Deflandre, 1972 ( Deflandre 1972a, pl. 4, fig. 6, nomen nudum) ; Deflandre 1972b: 15.
AGE AND LOCATION OF TYPE MATERIAL. — Visean (Lower Carboniferous), Cabrières, Hérault, Montagne Noire, France.
TAXON CODE. — 218.
STATUS. —Junior synonym of Archocyrtium Deflandre, 1972b (herein). DIAGNOSIS. — “Раковина удлиненно-конической формы, стенка центральной субсферической части раковины – цефалиса пористая. Внутренний каркас представлен четырехлучевой спикулой, расположенной в центре цефалиса. Раковина несет четыре основные трехгранные иглы, три из которых окружают пилом, а одна, аборальная занимает осевое положение. Три основные иглы, окаймляющие пиломное отверстие, соединены широкой непористой пластинкой в виде субконического перистома.” ( Afanasieva 1986: 31).
DIAGNOSIS (English translation by J. P. Caulet – RadWorld database). — “Shell elongated-conical, central part of the subspherical part (cephalis) porous. Intetrnal structure represented by a four-rays spicule, at the centre of the cephalis. Four main spines, three-sided, three of them around the pylome, the other one, aboral, in axial location. The three main spines at the border of the pylome are reunited around the aperture by a wide, imperforate plate, shaped as a sub-conical peristome.”
REMARKS
The distinction of having an imperforate peristome, made by Afanasieva (1986) and used as a criterion to introduce a new genus, is herein regarded as a species rather than genus level difference.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Allocyrtium Afanasieva, 1986
Noble, Paula, Aitchison, Jonathan C., Danelian, Taniel, Dumitrica, Paulian, Maletz, Jörg, Suzuki, Noritoshi, Cuvelier, Jessie, Caridroit, Martial & O’Dogherty, Luis 2017 |
Allocyrtium
AFANASIEVA M. S. 1986: 31 |