Microcheilinella cf. venusta Chen, 1958

Forel, Marie-Béatrice, 2012, Ostracods (Crustacea) associated with microbialites across the Permian-Triassic boundary in Dajiang (Guizhou Province, South China), European Journal of Taxonomy 19, pp. 1-34 : 21

Microcheilinella cf. venusta Chen, 1958

Fig. 13Q

Locality

- Wujiaping Formation (samples 05PAJ22, 24, 25, 28, 29), Dajiang section (25°33’56’’N- 106°39’41’’E), Guizhou Province, South China, Changhsingian, Late Permian.

Remarks

This species is closely related to Microcheilinella venusta Chen, 1958 from the Early Permian of Lungtan, Qixia Formation, Nankin ( Chen 1958) but here the specimens are more elongated and thinner, with a more rounded PB. It can also be compared to Microcheilinella cf. venusta Chen, 1958 sensu Crasquin-Soleau, 2006 from the Early Triassic of the Jinya/Waili section, Guangxi Province, South China ( Crasquin-Soleau et al. 2006). However here the species is more elongated, with longer DB and no lateral compression in the posterior part.

Figures

Fig. 13. Ostracods from the Dajiang section, South China. — A–B. Petasobairdia sp. 1. A. Carapace, right lateral view, P6M3082. B. Carapace, right lateral view, P6M3083. — C. Petasobairdia sp. 2, carapace, right lateral view, P6M3084. — D–E. Petasobairdia sp. 3. D. Carapace, right lateral view, P6M3085. E. Carapace, right lateral view, P6M3086. — F. Petasobairdia? sp. 4, carapace, right lateral view, P6M3087. — G. Spinocypris sp. 1, carapace, right lateral view, P6M3088. — H–I. Spinocypris? sp. 2. H. Carapace, right lateral view, P6M3089. I. Carapace, right lateral view, P6M3090. — J. Kempfina sp. 1, carapace, right lateral view, P6M3091. — K–L. Silenites sp. 1. K. Carapace, right lateral view, P6M3092. L. Carapace, right lateral view, P6M3093. — M-N. Silenites sp. 2. M. Carapace, right lateral view, P6M3094. N. carapace, right lateral view, P6M3095. — O. Silenites sp. 3, carapace, right lateral view, P6M3096. — P. Silenites sp. 4, carapace, right lateral view, P6M3097. — Q. Microcheilinella cf. venusta Chen, 1958, carapace, dorsal view, P6M3132. — R. Microcheilinella sp. 1, carapace, right lateral view, P6M3131. — S. Cetollina? sp. 1, carapace, right lateral view, P6M3098. — T–X. Paracypris gaetanii Crasquin–Soleau, 2006. T. Carapace, right lateral view, P6M3099. U. Carapace, right lateral view, P6M3100. V. Carapace, left lateral view, P6M3101. W. Carapace, left lateral view, P6M3102. X. Carapace, right lateral view, P6M3103. – Scale = 100 µm.