Pembroke purple shale { 2. Thick series of rhyolite tuffs & flows with a little red shale 1. Purple-red, splintery shales with occasional bands of gray shale, the latter 10 to 50 ft. thick & only occasional in conspicuous as compared with the red shale. } {No corals, corallines, no crinoids. Lingula minima Sow. (Downton) {No other Brachiopods Grammysia cingulata His (Highest England) " " var. triangulata Salter. (V. Ludlow) Small modiolopsoids No Nuculoids, no Pterinoids Platyschisma helictes Sow. (Downton) {no other Gastropods, no Cephalopods, no stero-pods. #| Drepanella sp. B Beyrichia tuberculata var's.} Etage K (Oesel) #B " salteriana v var's. B " kloedeni var. gibba Salter. (V. Ludlow) Leperclitia NO TRILOBITES