Dubaria tenera Nikiforova & T. Modzalevskaya, 1968

Modzalevskaya, Tatiana L., 2003, Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic), Geodiversitas 25 (1), pp. 73-107 : 93-94

publication ID

https://doi.org/ 10.5281/zenodo.5375016

persistent identifier

https://treatment.plazi.org/id/03A0162A-E953-FFBC-DB1E-FB0C794F1A5C

treatment provided by

Marcus

scientific name

Dubaria tenera Nikiforova & T. Modzalevskaya, 1968
status

 

Dubaria tenera Nikiforova & T. Modzalevskaya, 1968 ( Figs 22 View FIG J-M; 23)

Dubaria tenera Nikiforova & T. Modzalevskaya, 1968: 68 , pl. III, figs 8-10.

MATERIAL EXAMINED. — Three specimens from loc. 13, beds 64, 89, Matusevich River, October Revolution Island ( Männik et al. 2002: figs 2, 5); Vodopad and Golomyannyj formations.

REMARKS

The specimens assigned to this species show some characteristics of external and internal structures identical to those of Dubaria tenera , illustrated by Nikiforova & Modzalevskaya from the Talikit Formation of East Siberia ( Fig. 23 View FIG ). Possibly, this species is a junior synonym of Atrypopsis varians Poulsen, 1943 described from the Offley Island Formation of Greenland ( Poulsen 1943: 44, pl. 5, figs 13-16). These two taxa are morphologically very similar. However, the identification of our specimens is quite problematic due to the lack of the dorsal myophragm on them. This structure is one of the main diagnostic features of Atrypopsis and Dubaria Boucot, Johnson & Staton, 1964 ( Rubel 1970) . P. Copper (1991: 37), restudying the atrypids, concluded that Atrypopsis , Dubaria , Rhynchatrypa Siehl, 1962 , and Barkolia Zhang, 1983 are junior synonyms of Septatrypa Kozlowski, 1929 . Hence, the occurrence of a short dorsal septum is an essential feature to identify Septatrypa ( Nikiforova et al. 1985: 44, pl. 11, fig. 9).

Order SPIRIFERIDA Waagen, 1883

Kingdom

Animalia

Phylum

Brachiopoda

Class

Rhynchonellata

Order

Atrypida

Family

Lissatrypidae

Genus

Dubaria

Loc

Dubaria tenera Nikiforova & T. Modzalevskaya, 1968

Modzalevskaya, Tatiana L. 2003
2003
Loc

Dubaria tenera

Nikiforova & T. Modzalevskaya 1968: 68
1968
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