. Bulletin of the British Museum (Natural History), Geology. 2I4 LOWER LLANDOVERY TRILOBITES (presumably Si) at the posterior ends of the lateral lobes, and further forwards are traces of paired furrows (presumably S2); the occipital lobes are faintly defined. A cranidium about i-i mm. long (PL 2, fig. II; Text-fig. 2d) is referred to the species on the basis of the strong eye-ridge palpebral lobe and well developed frontal lobe of the glabella, features which preclude reference to any of the other trilobites in the fauna. In front of the occipital furrow are two transverse glabellar furrows (
. Bulletin of the British Museum (Natural History), Geology. 2I4 LOWER LLANDOVERY TRILOBITES (presumably Si) at the posterior ends of the lateral lobes, and further forwards are traces of paired furrows (presumably S2); the occipital lobes are faintly defined. A cranidium about i-i mm. long (PL 2, fig. II; Text-fig. 2d) is referred to the species on the basis of the strong eye-ridge palpebral lobe and well developed frontal lobe of the glabella, features which preclude reference to any of the other trilobites in the fauna. In front of the occipital furrow are two transverse glabellar furrows (presumably Si and S2) and traces of paired furrows (presumably S3) near the ends of the eye-ridges. Oblique furrows run back from near the outer ends of S2 to join Si and apparently continue faintly back to define small lobes. The occipital ring is poorly preserved. The glabella is widest across the frontal lobe, and the axial furrows are deepened and widened to form anterior pits at the anterolateral corners of the 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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