Novispathodus gryphus, Leu & Bucher & Vennemann & Bagherpour & Ji & Brosse & Goudemand, 2022
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publication ID |
https://doi.org/ 10.1186/s13358-022-00259-x |
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DOI |
https://doi.org/10.5281/zenodo.13127949 |
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persistent identifier |
https://treatment.plazi.org/id/038B1D1D-6475-FFAD-FF1B-EF7BD346FCA7 |
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treatment provided by |
Felipe |
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scientific name |
Novispathodus gryphus |
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sp. nov. |
Novispathodus gryphus n. sp.
Fig. 17G–I, K View Fig ?, L
Etymology: from the Greek root ‘gryph’ referring to the hooked shape of the P 1 element.
Holotype: specimen illustrated in Fig. 17H View Fig .
Paratype: specimen illustrated in Fig. 17L View Fig .
Type locality: Qiakong, Luolou formation, Guizhou Province, China.
Type level: Luolou Formation, within latest Smithian black shales.
Number of specimens. ca. 10 specimens.
Diagnosis. A species with a short segminate-to-segminiscaphateP 1 element with 3 to 5 highly recurved denticles and a relatively large, sub-rounded basal cavity.
Description. Te P 1 element is segminate to segminiscaphate, the sub-rounded basal cavity extending to most of the length of the element with a tapering at the anterior end. Te denticles are mostly fused and highly recurved posteriorly: although the denticles get larger from the anterior to the posterior, except for the posteriormost one, the height of the carina looks sub-uniform because of the way the denticles are recurved. Te length-to-height ratio is about 1:1.
Remarks. Tese elements resemble strongly the homologous ones of Nv. pingdingshanensis , except that they are much shorter and bear less denticles, which are usually more recurved. Still, some may be confused with broken elements of Nv. pingdingshanensis whose anteriormost end is missing ( Fig. 17G View Fig ). Hence the anterior end must be inspected for traces of breakage. Although the specimens we have seen do not show obvious, surfacial traces of breakage, it is not excluded that some of these elements were broken and were subsequently repaired, thus covering such traces at the surface of the crown. Goudemand and Orchard (in Goudemand et al., 2012b) differentiated similar but longer elements as Nv. aff. pingdingshanensis ( Goudemand et al., 2012b, figs. 2K, 2L) because they are lower and their denticles more recurved than in elements of Nv. pingdingshanensis : their denticles are so recurved that their upper profile appears straight; as such they are reminiscent of the present species, with whom they may be closely related. In comparison with Nv. soleiformis ( Zhao & Orchard, 2008) Nv. gryphus n. sp. has a higher carina with less numerous but more posteriorly recurved denticles. Furthermore, the basal cavity of Nv. gryphus n. sp. does not extend as a wide deep groove anteriorly like in Nv. soleiformis .
Occurrence. Luolou Formation, within the latest Smithian black shales, Guangxi and Guizhou, South China (this study).
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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