Nothorthis Ulrich and Cooper, 1938

Zhan, Renbin & Jin, Jisuo, 2005, Brachiopods from the Middle Ordovician Shihtzupu Formation of Yunnan Province, China, Acta Palaeontologica Polonica 50 (2), pp. 365-393 : 374

publication ID

https://doi.org/ 10.5281/zenodo.13620317

persistent identifier

https://treatment.plazi.org/id/4043A477-077C-100B-FCE6-B801FB969337

treatment provided by

Felipe

scientific name

Nothorthis Ulrich and Cooper, 1938
status

 

Genus Nothorthis Ulrich and Cooper, 1938 View in CoL Nothorthis perplexa Xu and Liu, 1984

Fig. 8L, O; Table 4.

Nothorthis? perplexa sp. nov.; Xu and Liu 1984: 171, pl. 11: 22–25. Nothorthis perplexa Xu and Liu, 1984 ; Zhan and Jin in press.

Material.—Two dorsal internal moulds.

Discussion.—The minute, slightly transverse shells of Nothorthis perplexa are rare but well preserved together with the large shells of Martellia and Leptellina . The brachiophores are rod−like with widely divergent brachiophore bases ( Fig. 8L 1 View Fig , L 2 View Fig ). The cardinal process is small, ridge− or knob−like. The multicostellae are somewhat less numerous than in other species of Nothorthis . These characters are essentially identical to those of the same species from the Dashaba Formation (see Zhan and Jin in press).

Kingdom

Animalia

Phylum

Brachiopoda

Class

Rhynchonellata

Order

Orthida

Family

Archaeorthidae

Loc

Nothorthis Ulrich and Cooper, 1938

Zhan, Renbin & Jin, Jisuo 2005
2005
Loc

Nothorthis? perplexa

Xu Han-kui & Liu Di-yong 1984: 171
1984
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