Fabalicypris parva Wang, 1978

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 : 13-19

Fabalicypris parva Wang, 1978

Fig. 11I

Fabalicypris parva Wang, 1978: 293 , pl. 2, figs 12a-b, 13a-b.

Fabalicypris hungarica Kozur, 1985: 82 , pl. 2, figs 2, 9, 10.

Bairdiacypris opulenta – Shi & Chen 1987: 51, pl. 13, fig. 10. Fabalicypris parva – Crasquin-Soleau et al. 2004: 286, pl. 3, figs 4-5. — Mette 2008: pl. 2, fig. 8 - Crasquin et al. 2010: 353, fig. 9A’-B’.

Localities

- Wujiaping Formation (sample 05PAJ26), Dajiang section (25°33’56’’N- 106°39’41’’E), Guizhou Province, South China, Changhsingian, Late Permian.

- Longtan and Changxing Formations, Guizhou and Yunnan Provinces, South China, Wuchiapingian and Changhsingian, Late Permian ( Wang 1978).

- Bükk Mountains, Hungary, Late Moscovian, Carboniferous, Late Permian ( Kozur 1985).

- Changxing formation, Meishan section, Zhejiang Province, South China, Changhsingian, Late Permian ( Shi & Chen 1987; Crasquin et al. 2010).

- Çürük dağ section, Western Taurus, Turkey, Wuchiapingian and Changhsingian, Late Permian ( Crasquin-Soleau et al. 2004).

- Zal section, Iran, Changhsingian, Late Permian ( Mette 2008).

Remarks

According to previously published records of Fabalicypris parva Wang, 1978 , this species is known from the Late Moscovian (Carboniferous; Kozur 1985) to the Changhsingian (Late Permian; Wang 1978; Shi & Chen 1987; Crasquin-Soleau et al. 2004; Mette 2008; Crasquin et al. 2010). This long stratigraphic range is suspicious: most of the occurrences being late Permian in age, the Carboniferous one seems questionable. When defining F. hungarica Kozur, 1985 as a synonym of F. parva Wang, 1978 , Crasquin et al. (2010) stated that F. hungarica had a more rounded PB and a maximum of convexity located higher than F. parva . However, because all intermediate shapes between the 2 species were available, they considered all the specimens as belonging to the same species. This observation together with the long stratigraphic repartition of the species seems to indicate an evolutionary trend within one single species. More material is necessary to test this hypothesis.

Figures

Fig. 11. Ostracods from the Dajiang section, South China. — A–B. Bairdiacypris sp. 8. A. Carapace, right lateral view, P6M3058. B. Carapace, right lateral view, P6M3059. — C–D. Bairdiacypris sp. 9. C. Carapace, right lateral view, P6M3060. D. Carapace, right lateral view, P6M3061. — E–F. Bythocypris? sp. 1. E. Carapace, right lateral view, P6M3062. F. Carapace, right lateral view, P6M3063. — G. Bythocypris sp. 2, carapace, right lateral view, P6M3064. — H. Bythocypris? sp. 3, carapace, right lateral view, P6M3065. — I. Fabalicypris parva Wang, 1978, carapace, right lateral view, P6M3066. — J–N. Liuzhinia antalyaensis Crasquin–Soleau, 2004. J. Carapace, right lateral view, P6M3067. K. Carapace, left lateral view, P6M3068. L. Carapace, left lateral view, P6M3069. M. Carapace, right lateral view, P6M3070. N. Carapace, right lateral view, P6M3071. — O.?Liuzhinia antalyaensis Crasquin– Soleau, 2004, carapace, left lateral view, P6M3072. — P. Liuzhinia sp., carapace, right lateral view, P6M3073. — Q–S. Liuzhinia sp. 2. Q. Carapace, right lateral view, P6M3074. R. Carapace, left lateral view, P6M3075. S. Carapace, right lateral view, P6M3076. — T–X. Orthobairdia jeanlouisi sp. nov. T. Holotype, carapace, right lateral view, P6M3077. U. Carapace, left lateral view, P6M3078. V. Paratype, carapace, dorsal view, P6M3079. W. Carapace, right lateral view, P6M3080. X. Carapace, right lateral view, P6M3081. – Scale = 100 µm.