Naja cf. romani (Hoffstetter, 1939)
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publication ID |
https://doi.org/ 10.26879/1156 |
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persistent identifier |
https://treatment.plazi.org/id/03C287BE-8324-7806-D0D0-FE36F5A1F2B4 |
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treatment provided by |
Felipe |
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scientific name |
Naja cf. romani (Hoffstetter, 1939) |
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Naja cf. romani (Hoffstetter, 1939)
Figure 9 View FIGURE 9
Material. UBB V 969 one venom fang; UBB V 970/ 1-5 four presacral vertebrae, one caudal vertebra.
Description. The venom fang is slightly curved anteroposteriorly and compressed laterally. On the anterior margin of the venom fang there is a continuous groove and an elongated foramen near the tip of tooth ( Figure 9A View FIGURE 9 ).
The vertebrae are robustly built with the neural arch moderately vaulted and preserving the remnants of low neural spines. The zygosphenal roof is shallowly convex with variable anterior margin. In the largest specimen there are two small lateral lobes preserved, whereas the medial one is with a medial concavity ( Figure 9B, C View FIGURE 9 ); in a small specimen the zygosphene is crenate, with a distinct medial lobe ( Figure 9 View FIGURE 9 E-F). The prezygapophysis is oval-shaped, whereas the prezygapophyseal process is about the same length as the diameter of the prezygapophysis. The hypapophysis is relatively short, robustly built and directed posteroventrally ( Figure 9D View FIGURE 9 ). The paradiapophyses are well differentiated into parapophyseal and diapophyseal portions and are roughly of equal length. There is an extremely short parapophyseal process. The single caudal vertebra possesses an extremely short prezygapophyseal process; the pleurapophyses are broken off, whereas the haemal processes are short ( Figure 9 View FIGURE 9 G-H).
Remarks. The morphology of the venom fang and vertebrae are closely similar to those of Naja romani described from the late Miocene (MN 9) of Gritsev and Rudabánya, as well as to those known from the late Miocene of Kohfidisch (Szyndlar and Zerova, 1990; Szyndlar, 1991b, 2005). The morphological variations observed in the vertebra from FP 1 ( Figure 9 View FIGURE 9 B-C) are that on the zygosphenal roof the medial lobe bears a concavity (typically it protrudes anteriorly) and the parapophysis is extremely short, which is usually longer and projecting anteriorly or anteroventrally (Szyndlar, 1991b). More material is needed from the locality of FP 1 in order to investigate if the above morphological variations should represent taxonomically important features.
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Royal British Columbia Museum - Herbarium |
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