Bombina sp.
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publication ID |
https://doi.org/10.1186/s13358-024-00332-7 |
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persistent identifier |
https://treatment.plazi.org/id/E86287BF-FFEA-FFF2-B99E-A173FD27FA86 |
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treatment provided by |
Felipe |
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scientific name |
Bombina sp. |
| status |
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Figure 6 View Fig
Material. Chalicorrema: one sacral vertebra ( UU RA 516), one urostyle ( UU RA 513), and one humerus ( UU RA 504).
Description.
Te sacral vertebra UU RA 516 is poorly preserved
( Fig. 6a, b View Fig ). It clearly has a posterior condyle, but the anterior end is missing. Te neural canal is dorsoventrally compressed in anterior view. Dorsally, the neural arch has no carina neuralis. Only the right prezygapophysis is well preserved, whereas only the medial end of the left one is preserved. Te right prezygapophysis is wide and elliptical in dorsal view. Te prezygapophyses are well expanded medially, thus constricting the neural arch in the middle in dorsal view. Anteriorly, a poorly-preserved structure comparable with a pseudozygosphene is visible. Te transverse processes are missing, but their base is wide. Te preserved portion of the vertebra is slightly more than 7 mm wide and about 5 mm long.
Te urostyle UU RA 513 misses its distal portion
( Fig. 6c, d View Fig ). Anteriorly, it has a single, mediolaterally-widened cotyle. Te neural arch is closed dorsally and there is no carina neuralis. Transverse processes are present by the anterior end of the arch, being laminar in lateral view and slightly anteroposteriorly widened in dorsal view. Te specimen is about 9.5 mm in length.
Te humerus UU RA 504 is well preserved ( Fig. 6e, f View Fig ). It has a straight diaphysis, ending distally with a laterally-shifted and spherical eminentia capitata. Te crista paraventralis is absent. Te cristae medialis and lateralis are moderately developed, the medial one to a higher extent compared to the lateral one. Te well-marked olecranon scar is moderately elongated in a proximodistal direction. Te specimen is almost 10 mm in length.
Remarks. Tese few remains from Chalicorrema share with the genus Bombina the following morphological features (Bailon, 1999): the posterior cotyle; the extended transverse processes; the morphology of the prezygapophyses; the possible pseudozygosphene (sacral vertebra); the presence of widened transverse processes; the absence of carina neuralis; the presence of a single anterior cotyle (urostyle); straight diaphysis; the absence of crista paraventralis; and laterally-shifted eminentia capitata (humerus). Accordingly, we refer this material to Bombina .
| UU |
University of Uppsala |
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