in New Brunswick, Canada, also in rocks of Emsian age. Its branches bore spines up to 6 mm long which divided into two or three projections at their tips. It has resemblances to specimens of Aarabia, found in Morocco.

P. dapsile was found in Maine, USA. It appears to have been considerably smaller than the previous species, perhaps 30 cm tall, with smooth dichotomously branching stems, and sporangia only 2 mm long. Kasper et al. suggested that the smaller species P. dapsile