. Bulletin of the British Museum (Natural History). Figs 120-123 Kassinella (Trimurellina) superba Mitchell, 1978, from Killey Bridge Formation (M. Ashgill), Pomeroy, Co. Tyrone, Northern Ireland. Fig. 120, natural internal mould of brachial valve, holotype, the original of Mitchell 1978: pi. 14, figs 5, 6, GSM GU 1109, x 18; Fig. 121, natural internal mould of pedicle valve, the original of Mitchell 1978: pi. 14, fig. 14, GSM GU 1113, x 20; Fig. 122, natural internal mould of brachial valve, the original of Mitchell 1978: pi. 14, fig, 3, GSM GU 1121, x 20; Fig. 123, natural internal
. Bulletin of the British Museum (Natural History). Figs 120-123 Kassinella (Trimurellina) superba Mitchell, 1978, from Killey Bridge Formation (M. Ashgill), Pomeroy, Co. Tyrone, Northern Ireland. Fig. 120, natural internal mould of brachial valve, holotype, the original of Mitchell 1978: pi. 14, figs 5, 6, GSM GU 1109, x 18; Fig. 121, natural internal mould of pedicle valve, the original of Mitchell 1978: pi. 14, fig. 14, GSM GU 1113, x 20; Fig. 122, natural internal mould of brachial valve, the original of Mitchell 1978: pi. 14, fig, 3, GSM GU 1121, x 20; Fig. 123, natural internal mould of brachial valve, the original of Mitchell 1978: pi. 14, fig. 7, GSM GU 1124, x Fig. 124 Variation in the cardinal process and valve shape amongst various genera of Sowerbyellinae: a, b, Sowerbyella eximia Cooper, 1956, from Martinsburg Formation (L. Caradoc), Virginia, USA; c, d, Eoplectodonta duvalii (Davidson, 1847), from Slite Marl (Wenlock), Gotland, Sweden; e, f, Gunningblandella resupinata Percival, 1979, from Goonumbla Volcanics (U. Caradoc), New South Wales, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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