Chancelloria sp. B
|
publication ID |
https://doi.org/ 10.5281/zenodo.13285795 |
|
persistent identifier |
https://treatment.plazi.org/id/A07B87A4-D73D-2817-FCDD-6ADC87A7F82C |
|
treatment provided by |
Felipe |
|
scientific name |
Chancelloria sp. B |
| status |
|
Fig. 6C.
Material.—A dozen isolated marginal rays of chancelloriid sclerites with often broken distal ends from erratic boulders Me33 and 66. Figured specimen, ZPAL V. VI /105S17.
Description.—Small sclerites with long slender lateral rays (formula: 4+0) which bend away sharply and may be almost vertical to the basal plane. Outer surfaces of ray steinkerns are provided with minute spines, that may reflect, as counterparts, porosity of the sclerite wall. Basal end of sclerite ray bears the characteristic lateral faces, being a result of their arrangement in the sclerite. Basal foramina and surrounding structures partly covered with mineral grains.
Remarks.—A number of these small and slender internal moulds, which do not have the characteristic basal facets and basal foramen of the ray expressed, may also represent species Ch. racemifundis . This sclerite composition and arrangement of rays can be compared with those of Chancelloria spp. (Bengtson in Bengtson et al. 1990: fig. 26I–K) and a new type Chancelloria sp. described from the Middle Cambrian Beetle Creek Formation, Georgina Basin, Queensland ( Mehl 1998: 1176, pl. 7: 9).
Occurrence.—Allochthonous Early Cambrian (Botomian) boulders (Me32, 33, and 66), King George Island, Antarctica.
| ZPAL |
Zoological Institute of Paleobiology, Polish Academy of Sciences |
| V |
Royal British Columbia Museum - Herbarium |
| VI |
Mykotektet, National Veterinary Institute |
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.