Spinatrypina lungkouchungensis ( Tien, 1938 )

Ma, Xue-Ping, Becker, Ralph Thomas, Li, Hua & Sun, Yuan-Yuan, 2006, Early and Middle Frasnian brachiopod faunas and turnover on the South China shelf, Acta Palaeontologica Polonica 51 (4), pp. 789-812 : 803-804

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 )
status

 

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.

Kingdom

Animalia

Phylum

Brachiopoda

Class

Rhynchonellata

Order

Atrypida

Family

Atrypidae

Genus

Spinatrypina

Loc

Spinatrypina lungkouchungensis ( Tien, 1938 )

Ma, Xue-Ping, Becker, Ralph Thomas, Li, Hua & Sun, Yuan-Yuan 2006
2006
Loc

Atrypa douvillii var. lungkouchungensis

Tien, C. C. 1938: 97
1938
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