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Yumenia oriformis

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Journal Article

Nonmarine ostracod fauna from the Lower Cretaceous Shinekhudag Formation (southwest Mongolia): taxonomy, biostratigraphy, and paleoecology Available to Purchase

Byung-Do Choi, Yaqiong Wang
Published: 01 May 2023
Journal of Paleontology (2023) 97 (3): 612–630.
DOI: https://doi.org/10.1017/jpa.2023.5
...) yielded various ostracods assigned to nine species belonging to six genera: Cypridea verrucata Neustrueva, 1974 , C. ihsienensis Hou, 1958 , C. unicostata Galeeva, 1955 , C. tumefacta Neustrueva, 1974 , Yumenia cf. Y. oriformis Hou, 1958 , Scabriculocypris subscalara Zhang and Chen in Ye et al., 2003...
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(1) Cypridea tumefacta (Neustrueva, 1974), left view of valve, NIGP 180031, sample 5MT062111-9. (2, 3) Yumenia cf. Y. oriformis (Hou, 1958): (2) right view of adult valve, NIGP 180032, sample 4UK070411-2; (3) right view of ?A-2 instar valve, NIGP 180033, sample 4UK070411-1. (4, 5) Scabriculocypris subscalara (Zhang and Chen in Ye et al., 2003), adult carapace, NIGP 180034, sample 4UK070411-1: (4) left view; (5) right view. (6, 7) ?Trapezoidella sp.: (6) left view of valve, NIGP 180035, sample 5MT062111-3; (7) left view of internal mold, NIGP 180036, sample 5KC062111-2. (8) Candona sp., lateral view of right valve, NIGP 180037, sample 5MT062111-9. Scale bars = 100 μm.

( 1 ) Cypridea tumefacta (Neustrueva, 1974 ), left view of valve, NIGP 1... Available to Purchase

Published: 01 May 2023
Figure 5. ( 1 ) Cypridea tumefacta (Neustrueva, 1974 ), left view of valve, NIGP 180031, sample 5MT062111-9. ( 2, 3 ) Yumenia cf. Y . oriformis (Hou, 1958 ): ( 2 ) right view of adult valve, NIGP 180032, sample 4UK070411-2; ( 3 ) right view of ?A-2 instar valve, NIGP 180033, sample