Undularia ( Toxoconcha ) jaculum ( Stoppani, 1858 )
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publication ID |
https://doi.org/10.4081/nhs.2016.288 |
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persistent identifier |
https://treatment.plazi.org/id/550687BB-FFE3-FFEE-FFBF-FD58FDA9F9F4 |
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treatment provided by |
Felipe |
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scientific name |
Undularia ( Toxoconcha ) jaculum ( Stoppani, 1858 ) |
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Undularia ( Toxoconcha) jaculum ( Stoppani, 1858)
Specimen: MSNM i13008 - Fig. 1s.
Height: 25 mm (= last 4 whorls).
Stoppani Label: not present.
Anonymous Label: not present.
Garassino Label: Undularia uniformis, Olotipo. Esino. Triassico Superiore.
Remarks: This specimen is clearly not Undularia uniformis . Rather, it seems to be Undularia ( Toxoconcha) jaculum (Stoppani) , as per the figure in Kittl 1899 (pag. 169, fig. 100).
Stoppani’s estimated height of his specimen of Undularia ( Toxoconcha) jaculum (pag. 33, pl. 7, fig. 28) is 30 mm, and the pleural angle is 29°.
The height of the same specimen of Undularia ( Toxoconcha) jaculum derived from Kittl’s figure of an unreconstructed specimen is 27 mm without the initial whorls, and so corresponds to the size given by Stoppani.
Discussion: This specimen lacking Stoppani’s original label seems very similar in size and shape to the specimen of Undularia ( Toxoconcha) jaculum illustrated in Kittl (1899) as the Stoppani’s original specimen, even if the initial whorls are somewhat more damaged.
Conclusion: There are insufficient elements to establish this specimen as the specimen described by Stoppani of Undularia ( Toxoconcha) jaculum .
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