. Bulletin of the British Museum (Natural History), Geology. THE ORDOVICIAN TRILOBITE FAUNAS OF SOUTH SHROPSHIRE 143 Termier, G. & H. 1950. Paleontologie Marocaine. 2. Actual. Sci. Industr., Paris, 1095 : 1-279, pis. 184-241. Thorslund, P. 1940. On the Chasmops Series of Jemtland and Sodermanland (Tvaren). Sverig. Geol. Unders. Afh., Stockholm (C) 436 : 1-191, pis. 1-15. Vogdes, A. W. 1890. A bibliography of Paleozoic Crustacea from 1698 to 1889 including a list of North American species and a systematic arrangement of genera. Bull. Geol. Surv., Washington, 63 : 1-177. Wade, A. 1911.
. Bulletin of the British Museum (Natural History), Geology. THE ORDOVICIAN TRILOBITE FAUNAS OF SOUTH SHROPSHIRE 143 Termier, G. & H. 1950. Paleontologie Marocaine. 2. Actual. Sci. Industr., Paris, 1095 : 1-279, pis. 184-241. Thorslund, P. 1940. On the Chasmops Series of Jemtland and Sodermanland (Tvaren). Sverig. Geol. Unders. Afh., Stockholm (C) 436 : 1-191, pis. 1-15. Vogdes, A. W. 1890. A bibliography of Paleozoic Crustacea from 1698 to 1889 including a list of North American species and a systematic arrangement of genera. Bull. Geol. Surv., Washington, 63 : 1-177. Wade, A. 1911. The Llandovery and associated rocks of north-eastern Montgomeryshire. Quart. J. Geol. Soc. Lond., 67 : 415-459, pis. 33-36. Whittard, W. F. 1955. The Ordovician trilobites of the Shelve Inlier, West Shropshire, 1 : 1-40, pis. 1-4. Palaeontogr. Soc. [Monogr.] London. 1956. The Ordovician trilobites of the Shelve Inlier, West Shropshire, 2 : 41-70, pis. 5-9. Palaeontogr. Soc. [Monogr.] London. 1958. The Ordovician trilobites of the Shelve Inlier, West Shropshire, 3 : 71-116, pis. 10-15. Palaeontogr. Soc. [Monogr.] London. Whittington, H. B. 1938. The fauna of the Lluest Quarry, Llanfyllin (Wattsella horder- leyensis Super-Zone), and its correlation. Proc. Geol. Ass. Lond., 49 : 49-54, pi. 6. 1938a. The geology of the district around Llansantffraid ym Mechain, Montgomeryshire. Quart. J. Geol. Soc. Lond., 94 : 423-457, pis. 38, 39. 1940. On some Trinucleidae described by Joachim Barrande. Amer. J. Sci., Washington, 238 : 241-259, pis. 1-4. â 1941. The Trinucleidaeâwith special reference to North American genera and species. /. Paleont., Tulsa, 15 : 21-41, pis. 5, 6. 1950. Sixteen Ordovician genotype trilobites. /. Paleont., Tulsa, 24 : 531-565, pis. 68-75. 1954- Onnia (Trilobita) from Venezuela. Breviora, Cambridge, Mass., 38 : 1-5, 1 pi. Whittington, H. B. & Williams, A. 1955. The fauna of the Derfel Limestone of the Arenig district, North Wales. Philos. Trans., London (B) 2
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