Age, Diakonoff, 1982

Tenny, Jakub Prokop André Nel Andrew, 2010, On the phylogenetic position of the palaeopteran Syntonopteroidea (Insecta: Ephemeroptera), with a new species from the Upper Carboniferous of England, Organisms Diversity & Evolution (New York, N. Y.) 10 (4), pp. 331-340 : 333

Age and outcrop

The fossil was found in a nodule in the tips at Crock Hey opencast pit (accessible 2001–2005), roof shales of Ru’ s coal seam 2b, Langsettian (Westphalian A), Late Carboniferous, Lancashire, UK ( Anderson et al. 1999).