original description
Cox, L. R. (1933). A lower Tertiary siliceous rock from the Anglo-Egyptian Sudan. <em>Bulletin de l'Institut d'Égypte.</em> 15 (2): 315-348.
page(s): 341-342, pl. 4, fig. 6a, b [details] Available for editors [request]
From editor or global species database
Type locality Hudi (railway station, c. 30 km east-north-east of Atbara), Sudan [details]