Spinatrypina lungkouchungensis ( Tien, 1938 )
publication ID |
https://doi.org/ 10.5281/zenodo.13742176 |
persistent identifier |
https://treatment.plazi.org/id/4836037D-D662-6C48-FFBF-D7BDFF49FE73 |
treatment provided by |
Felipe |
scientific name |
Spinatrypina lungkouchungensis ( Tien, 1938 ) |
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Spinatrypina lungkouchungensis ( Tien, 1938)
Fig. 10H, I View Fig .
1938 Atrypa douvillii var. lungkouchungensis Tien (var. nov.); Tien 1938: 97–98, pl. 13: 14–16.
Material.— Four specimens. Samples: QZQ1–3 (2 specimens), QZQ3 (1 juvenile), QZQ4 (1 specimen). QZQ1–3 and QZQ3 , Qiziqiao section, Middle Frasnian; QZQ4 , Qiziqiao section, probably Late Frasnian .
Discussion.— Tien (1938) described one species and a variety of the same species of Spinatrypina from the same sample of the Lungkouchung (now spelled Longkouchong) section: Atrypa douvillii var. lungkouchungensis Tien, 1938 and A. douvillii Mansuy, 1912 . The former is characterized by an elongated outline, with the ventral valve being more convex than the dorsal valve; the latter is characterized by a somewhat biconvex profile and subrounded outline. Because of few specimens (both Tien’s original and our new collections), it is difficult to determine at this stage if these differences represent intraspecific variation or are two species.
The studied specimens are not sufficiently well preserved to show the overall morphology except the juvenile ( Fig. 10I View Fig ) that has a slightly elongated outline. They are all assigned to Spinatrypina lungkouchungensis ( Tien, 1938) .
Occurrence.—So far the present species has been only reported from the Qiziqiao section, correlated with the Palmatolepis hassi to lower part of the Early Pa. rhenana conodont zones.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Spinatrypina lungkouchungensis ( Tien, 1938 )
Ma, Xue-Ping, Becker, Ralph Thomas, Li, Hua & Sun, Yuan-Yuan 2006 |
Atrypa douvillii var. lungkouchungensis
Tien, C. C. 1938: 97 |