Cryptolepas rhachianecti Dall, 1872
publication ID |
https://doi.org/ 10.11646/zootaxa.4154.3.8 |
publication LSID |
lsid:zoobank.org:pub:6C09E4D7-4EC8-4398-B171-96060ACAD357 |
DOI |
https://doi.org/10.5281/zenodo.6067905 |
persistent identifier |
https://treatment.plazi.org/id/03C087CF-2E08-FFAC-FF4B-952BFB67465B |
treatment provided by |
Plazi |
scientific name |
Cryptolepas rhachianecti Dall, 1872 |
status |
|
Cryptolepas rhachianecti Dall, 1872
Fig. 2 View FIGURE 2
Cryptolepas rhachianecti Dall, 1872: 300
Cryptolepas rhachianectis Gruvel, 1903: 153 , pl. 2, figs. 4–10; pl. 3, figs. 10-11
Material examined. NHG 27 About NHG 0 0 1, left latus or carinolatus collected from beach deposits in Zoutelande (Walcheren, The Netherlands), at the mouth of the River Scheldt.
Description and remarks. The size and aspect of this isolated left lateral or carinolateral compartment matches well the descriptions of the hard parts of Cryptolepas rhachianecti given by Pilsbry (1916), Zullo (1961, 1969), Davis (1972), Ross & Frick (2011) and Hayashi (2012). In particular, NHG 27 0 0 1 strikingly recalls the illustration of a cylinder-shaped specimen of C. rhachanecti , with very short external ribs, provided by Pilsbry (1916, pl. 66, figs. 2, 2a). Pilsbry (1916) described C. rhachianecti as follows: "[ C. rhachianecti ] differs [from Cetopirus complanatus and Coronula spp.] by lacking terminal flanges uniting the radial lamellae [i.e., the external ribs, or buttresses] into a solid outer wall, though there is sometimes a suggestive approach to this structure. [...] four to six ribs are seen on each compartment above. These ribs are denticulate along both sides. [...] They are finely striated vertically and crenulated at the basal edges. [...] The radii are as thick as the compartments [...]. The sheath is transversely grooved, a little shorter than the body-chamber, and its lower margin is not overhanging or prominent". Most of these characters can be clearly observed in NHG 27 0 0 1 ( Fig. 2 View FIGURE 2 ) and, on the whole, they allow us to unambiguously attribute NHG 27 0 0 1 to C. rhachianecti . Nevertheless, the specimen from Zoutelande appears slightly damaged, and the external ribs are moderately eroded and worn (likely as a consequence of mechanical degradation in the current beach environment). Whereas extant coronulid shells are typically whitecoloured and rather translucent, the specimen here studied is brownish and strongly opaque; as such, it was likely affected by some process of early fossilization (e.g. recrystalisation or permineralisation).
NHG |
Naturhistorische Gesellschaft e. V. |
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.
Kingdom |
|
Phylum |
|
Class |
|
SubClass |
Cirripedia |
Order |
|
Family |
|
Genus |
Cryptolepas rhachianecti Dall, 1872
Bosselaers, Mark & Collareta, Alberto 2016 |
Cryptolepas rhachianectis
Gruvel 1903: 153 |
Cryptolepas rhachianecti
Dall 1872: 300 |