Triturus sp.
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publication ID |
https://doi.org/ 10.26879/1156 |
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persistent identifier |
https://treatment.plazi.org/id/03C287BE-832D-780D-D74E-FBFCF094F1F2 |
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treatment provided by |
Felipe |
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scientific name |
Triturus sp. |
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Figure 3 View FIGURE 3
Material. UBB V 941 one fragmentary atlas; UBB V 942/1-3 two fragmentary presacral vertebrae, one caudal vertebra; UBB V 943/1-2 one proximal part of a femur, one fragmentary distal femur.
Description. The single atlas preserves the opisthocoelous centrum only. It is provided with two oval atlantal cotyles and the ventrally placed odontoid process; the subcentral surface is strongly sculptured by a network of small foramina. The vertebrae are opisthocoelous, elongated and provided with low and posteriorly bifurcated neural spines; the condyles are large and widened at their ends; the subcentral area is concave and pierced by several foramina of various size; the transverse processes are double headed. The posterior parts of the neural laminae and transverse process are broken off.
The two femurs are represented only by fragmentary examples. One of the specimens preserves the proximal part of a femur with a well-developed trochanter and crista trochanterica, whereas the other specimen preserves the distal part of a femur provided with a flattened and widened distal end.
Remarks. The morphology and size of the available specimens approach the condition seen in Triturus , especially those of the group Triturus cristatus . The neural spine is high in the members of Lissotriton , or extremely high in Carpathotriton , however, it is significantly of lower height in Triturus (Venczel, 2008) . Nevertheless, in T. marmoratus the neural spine tends to be higher, whereas in the T. cristatus group is of low height (Ivanov, 2008), as is the case with specimens from FP 1. Both femurs represent medium-sized specimens with their proximal and distal ends moderately widened, a condition known in Triturus . In the members of the mostly terrestrial Salamandra and Chelotriton the femur is strongly widened proximally and distally, whereas in the fully aquatic Carpathotriton these extremities always remain slender (Venczel, 2008).
Genus Latonia Meyer, 1843
Figure 4 View FIGURE 4 A-B
Material. UBB V 944/1-2 two fragmentary ilia.
Description. Only the proximal parts of the ilia are preserved representing two specimens of different sizes. The dorsal crest of the ilium is high, and the dorsal protuberance is embedded in the dorsal crest; the dorsal margin of the dorsal protuberance in both specimens is thickened. The preacetabular zone is extremely reduced, whereas the dorsal acetabular expansion and ischiatic process in both specimens is broken off.
Remarks. Within the alytids, in the members of Alytes the dorsal crests of the ilium is lacking, whereas Discoglossus and Latonia possess a high and thickened dorsal crest with a relatively small dorsal protuberance that is swollen along the posterodorsal part of the dorsal crest ( Bailon, 1999: fig. 19a, j; Venczel and Hír, 2013). In both specimens the angle enclosed by the dorsal protuberance and the base of the dorsal acetabular expansion is extremely wide. In Discoglossus the posterior part of the dorsal protuberance arises steeply ( Bailon, 1999: fig. 19a) and in consequence the angle enclosed by the dorsal acetabular expansion, and the dorsal protuberance is less wide than in Latonia (Rage and Hossini, 2000) .
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Royal British Columbia Museum - Herbarium |
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