Dihelictera cf. lepidota (Nikiforova & T. Modzalevskaya, 1968)

Modzalevskaya, Tatiana L., 2003, Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic), Geodiversitas 25 (1), pp. 73-107 : 89

publication ID

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

persistent identifier

https://treatment.plazi.org/id/03A0162A-E957-FFB9-DB3B-FB8C788A1895

treatment provided by

Marcus

scientific name

Dihelictera cf. lepidota (Nikiforova & T. Modzalevskaya, 1968)
status

 

Dihelictera cf. lepidota (Nikiforova & T. Modzalevskaya, 1968) ( Figs 19 View FIG ; 21I View FIG )

cf. Protatrypa lepidota Nikiforova & T. Modzalevskaya, 1968: 61 , pl. II, figs 8, 9.

MATERIAL EXAMINED. — Eight specimens from loc. 11, beds 14 and 14-A, and loc. 2, beds 74 and 79 (only fragments), Matusevich River, October Revolution Island ( Männik et al. 2002: figs 2, 5); Samojlovich Formation. Two poorly preserved specimens from samples 2zh/76, 2i/76, Pioneer Island ( Männik et al. 2002: fig. 1); Srednij Formation.

REMARKS

Specimens are small, with a ventral keel-like ridge and dichotomous ribs. Ribs are crossed by concentric growth lamellae which are most pronounced anteriorly. The internal structure is typical of the genus Dihelictera to which Protatrypa lepidota Nikiforova & T. Modzalevskaya, 1968 ( Nikiforova & Modzalevskaya 1968: 61, pl. II, figs 8, 9) is assigned by P. Copper (1995: 855) ( Fig. 19 View FIG ). This species is widespread in the Omnutakh and Khukta formations of East Siberia and Gora Gjiaden’ Formation of Salair (Ivanovsky & Kul’kov 1974: 59, pl. XX, figs 6, 7).

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