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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