. Bulletin of the British Museum (Natural History), Geology. . C D Fig. 10. Diagram summarizing salient points of difference between Merlinia species from the Arenig of Wales and the Welsh Borderland. A, M. rhyakos sp. nov. B, M. selwynii (Salter). C, M. major (Salter). D, M. murchisoniae (Murchison). cranidial section. This distinct furrow is a characteristic feature of Merlinia, which is absent from Ogyginus and Megalaspidella. Merlinia rhyakos gen. et sp. nov. (Figs 10-11; PI. 5, figs 1-6; PI. 6, figs 1-5) Ogygia marginata Crosfield & Skeat pars: 538; pi. 26, fig. 14 [non figs 13
. Bulletin of the British Museum (Natural History), Geology. . C D Fig. 10. Diagram summarizing salient points of difference between Merlinia species from the Arenig of Wales and the Welsh Borderland. A, M. rhyakos sp. nov. B, M. selwynii (Salter). C, M. major (Salter). D, M. murchisoniae (Murchison). cranidial section. This distinct furrow is a characteristic feature of Merlinia, which is absent from Ogyginus and Megalaspidella. Merlinia rhyakos gen. et sp. nov. (Figs 10-11; PI. 5, figs 1-6; PI. 6, figs 1-5) Ogygia marginata Crosfield & Skeat pars: 538; pi. 26, fig. 14 [non figs 13, 15-18, 20-25, =M. selwynii (Salter); nee figs 19, 26, =M. murchisoniae (Murchison)]. Diagnosis. Cephalic axial furrows shallow, preglabellar furrow almost effaced; frontal glabellar lobe hardly inflated, with dense prominent terrace lines; inner section of lateral border furrow. 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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