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The thecal form of some slender Llandovery Monograptus

Published online by Cambridge University Press:  01 May 2009

R. B. Rickards  and
A. W. A. Rushton
R. B. Rickards
Affiliation:
Department of Geology, Trinity College, Dublin.
A. W. A. Rushton
Affiliation:
Institute of Geological Sciences, London, S.W. 7.
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Summary

The thecal form of Monograptus argutus Lapworth and M. leptotheca Lapworth is similar to that of M. incommodus Törnquist, the type species of Pribylograptus Obut & Sobolevskaya; their thecae are geniculate and have introverted and laterally expanded apertures, and M. leptotheca has in addition apertural hoods. The relationships of these species are discussed.

Type
Articles
Information
Geological Magazine , Volume 105 , Issue 3 , June 1968 , pp. 264 - 274
Copyright
Copyright © Cambridge University Press 1968

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References

REFERENCES

Bassler, R. S. 1915. Bibliographic index of American Ordovician and Silurian fossils. Bull. U.S. Nat. Mus., 92, 1–1521.CrossRefGoogle Scholar
Bouček, B. & Přibyl, A. 1954. Contribution to our knowledge of the Cyrtograptids from the Silurian of Bohemia and on their stratigraphical importance. Rozpr. české Akad. Věd Uměni, 62 (for 1952), (9), 1–24.Google Scholar
Elles, G. L. & Wood, E. M. R. 1901–1918. A monograph of British graptolites. Palaeont. Soc. (Monogr.).Google Scholar
Frech, F. 1897. Lethaea Geognostica 1, Graptolithen. Stuttgart.Google Scholar
Gortani, M. 1920. Contributzione allo studio del Paleozoico Carnico. Pt. 6. Faune a Graptoliti. Palaeontogr. Ital., 26, 1–56.Google Scholar
Hsü, S. C. 1934. The graptolites of the Lower Yangze Valley. Monogr. natn. Res. Inst. Geol., Nankin, Ser. A, 4, 1–106.Google Scholar
Hundt, R. 1924. Graptolithen des deutschen Silurs. Leipzig.Google Scholar
Hutt, J. 1968. A redescription of the Llandovery Monograptid “Graptolithus” tenuis Portlock 1843. Geol. Mag., 105, (3) 251–255.CrossRefGoogle Scholar
Lapworth, C. 1876a. On Scottish monograptidae. Geol. Mag. (2), 3, 308–321, 350–360, 499–507, 544–552.CrossRefGoogle Scholar
Lapworth, C. 1876b. On the graptolites of County Down. Proc. Belfast Nat. Field Club, 1876–7, Appendix, 125–147.Google Scholar
Laursen, D. 1940. Cyrtograptusskifrene paa Bornholm. 1. Øleaa. Danm. geol. unders., 2, 64, 1–39.Google Scholar
Obut, A. M. 1949. Polevot Atlas rukovodiascich iskopaemuch graptolitov verchnego silura Kirgizkoj SSR. Trudy geol. Inst. Frunze, 1–29.Google Scholar
Obut, A. M. & Sobolevskaya, R. F. 1966. Lower Silurian graptolites in Kazakhstan (in Russian). Izdatel'stvo “Nauka”, Moscow, 1–56.Google Scholar
Přibyl, A. 1940. O českých zástupcích monograptidu ze skupiny Pristiograptus nudus. Rozpr. cěské Akad. Věd Uměni, 50 (for 1940), (16), 1–14.Google Scholar
Přibyl, A. 1948. Bibliographic index of Bohemian Silurian graptolites. Knih. st. geol. Úst. čsl. Repub., 22, 1–96.Google Scholar
Přibyl, A. & Spasov, C. 1955. Bibliographic index of Bulgarian Upper Silurian graptolites. Izv. geol. Inst. Sof., 3, 163–209.Google Scholar
Romariz, C. 1962. Graptolitos do Silúrico Português. Revta Fac. Ciênc. Univ. Lisb., Ser. C, 10, 115–312.Google Scholar
Ruedemann, R. 1947. Graptolites of North America. Mem. geol. Soc. Amer., 19, 1–652.Google Scholar
Sudbury, M. 1958. Triangulate monograptids from the Monograptus gregarius Zone (Lower Llandovery) of the Rheidol Gorge (Cardiganshire). Phil. Trans. R. Soc., Ser. B, 241 (685), 485–555.Google Scholar
Sun, Y. C. 1933. Ordovician and Silurian graptolites from China. Palaeont. sin., Ser. B, 14 (1) 1–52.Google Scholar
Törnquist, S. L. 1899. Researches into the Monograptidae of the Scanian Rastrites Beds. Lunds Univ. Arsskrift, 35, 1–25.Google Scholar
Tullberg, S. A. 1882. On the graptolites described by Hisinger and the older Swedish authors. Bihang Till K. Svenska Vetensk. Akad. Handl., 6 (13), 1–23.Google Scholar
Waterlot, G. 1945. Les graptolites du Maroc, 1, generalities sur les graptolites. Notes Mém. Serv. Mines Carte géol. Maroc, 63, 1–112.Google Scholar
Willefert, S. 1963. Les graptolites du Silurien inferieur du jbel Eguer-Iguiguena. Ibid., 177, 1–74.Google Scholar