Redefinition of Prospatangus thieryi Lambert, 1909 (Echinoidea, Spatangoida), in Sardospatangus nov. gen. with two new species from Sardinia, Italy = Redéfinition de Prospatangus thieryi Lambert, 1909 (Echinoidea, Spatangoida), en Sardospatangus nov. gen. avec deux nouvelles espèces de Sardaigne, Italie
Stara, P.; Charbonnier, S.; Borghi, E. (2018). Redefinition of Prospatangus thieryi Lambert, 1909 (Echinoidea, Spatangoida), in Sardospatangus nov. gen. with two new species from Sardinia, Italy = Redéfinition de Prospatangus thieryi Lambert, 1909 (Echinoidea, Spatangoida), en Sardospatangus nov. gen. avec deux nouvelles espèces de Sardaigne, Italie. Ann. Paleontol. 104(4): 309-327. https://dx.doi.org/10.1016/j.annpal.2018.10.001
In: Annales de Paléontologie. Elsevier Masson: Moulineaux. ISSN 0753-3969; e-ISSN 0753-3969, more
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| Keywords |
Sardospatangus; Sardospatangus arburensis; Sardospatangus caschilii; Sardospatangus thieryi; Spatangus Gray, 1825 [WoRMS]
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| Author keywords |
Sardospatangus nov. gen.; S. thieryi nov. comb.; S. arburensis nov. sp.; S. caschilii nov. sp.; Mediterranean; Neogene |
| Authors | | Top |
- Stara, P.
- Charbonnier, S.
- Borghi, E.
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| Abstract |
Prospatangus thieryi Lambert, 1909 (Echinoidea, Spatangoida) is an echinoid from the Early Miocene of Sardinia, Italy. The original description, mainly based on subjective morphological observations (e.g. from Lambert, 1909: une forme un peu plus longue que large, à sillon peu profond, apex légèrement excentrique en avant), made it problematic the comparison with other similar taxa. New observations based on a large set of structural and morphometric data taken from the lectotype and a newly collected specimen, both from Cameseda (Ales, Oristano Province, Sardinia, Italy), one of the two localities indicated by Lambert (1909) in the type area, enabled to improve the definition of this species and to transfer it into a new genus, Sardospatangus nov. gen. It differs from Spatangus Gray, 1825 (junior synonym: Prospatangus Lambert, 1902) mainly by the labrum, which is more elongate and in contact with two plates on either side of the adjacent ambulacra (I and V) instead of one, and by a lower total number of plates in the ambulacrum III. Two additional species of Sardospatangus nov. gen are identified within a large number of specimens from the Miocene of Sardinia examined in public institutions: S. caschilii nov. sp., proposed as the type species of the new genus, and S. arburensis nov. sp. |
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