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XXIX.—An Early Dictyoconus, and the Genus Orbitolina: Their Contemporaneity, Structural Distinction, and Respective Natural Allies

Published online by Cambridge University Press:  06 July 2012

Lieut.-Colonel L. M. Davies
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Abstract

The author summarises recent reports regarding the appearance in Mesozoic rocks of Blanckenhorn's genus Dictyoconus, long supposed to have originated in the Middle Eocene. He figures and describes the best known of these Mesozoic forms, in order to place its age and generic attribution beyond question, and discusses the problem of its relationship to allied genera as affected by its early appearance. He then describes d'Orbigny's contemporary (Cretaceous) genus Orbitolina, with which Dictyoconus has often been confused, in order to show its radical difference in structure and the characteristics of forms which can be more justly regarded as related to it. He also discusses the genotype of Orbitolina, since the species lately quoted as such is unsuitable.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 59 , Issue 3 , 1939 , pp. 773 - 790
Copyright
Copyright © Royal Society of Edinburgh 1939

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References

References to Literature

Adkins, W. S., Oct. 8, 1928. “Handbook of Texas Cretaceous Fossils,” Bull. Univ. Texas Bur. econ. Geol. Tech., No. 2828.Google Scholar
Archiac, E. J. A. D. de St. S. D'., 1837. “Mémoire sur la formation crétacé du sud-ouest de la France,” Mém. Soc. Géol. Fr. (1), vol. ii, pt. 2, Mém. vii, pp. 157–192; pls. xi-xiii.Google Scholar
Blainville, H. M. D. de, 1830. Dict. Sci. Nat., vol. lx, p. 377, Paris and Strasbourg.Google Scholar
Blanchet, F., July-Sept. 1918. “Étude micrographique des calcaires urgoniens,” Trav. Lab. Géol. Univ. Grenoble, 1916-1917, vol. xi, fasc. 3, pp. 29–86; pls. i-ii.Google Scholar
Blanckenhorn, M. L. P., 1900. “Neues zur Geologie und Paläontologie Aegyptens,” Z. dtsch. geol. Ges., vol. lii, fasc. 3, pp. 403–479.Google Scholar
Blumenbach, J. F., 1796–1810. Abbildungen Naturhistorischer Gegenstände, Göttingen.Google Scholar
Carpenter, W. B., Parker, W. K., and Jones, T. R., 1862. “Introduction to the Study of the Foraminifera,” Ray Soc. Publ.CrossRefGoogle Scholar
Carsey, D. O., March 1926. “Foraminifera of the Cretaceous of Central Texas,” Bull. Univ. Texas Bur. econ. Geol. Tech., No. 2612.Google Scholar
Chapman, F., 1900. “On a Patellina-Limestone and another Foraminiferal Limestone from Egypt,” Geol. Mag., N.S., Dec. 4, vol. vii, pp. 3–17; pl. ii.CrossRefGoogle Scholar
Cushman, J. A., 1928. Foraminifera, their Classification and Economic Use, Sharon.CrossRefGoogle Scholar
Cushman, J. A., July 1933. “Two New Genera, Pernerina and Hagenowella, and their relationships to other Genera of the Valvulinidæ,” Amer. Journ. Sci., vol. xxvi, pp. 19–26; pls. i-ii.CrossRefGoogle Scholar
Cushman, J. A., July 1933 a. Foraminifera, etc., as above, 2nd ed., with Illustrated Key to the Genera of the Foraminifera, Sharon.Google Scholar
Cushman, J. A., and Ponton, G. M., June 1933. “A New Genus of the Foraminifera, Gunteria, from the Middle Eocene of Florida,” Contr. Cushman Lab., vol. ix, pp. 25–30; pl. iii, figs. 1-3.Google Scholar
Davies, L. M., 1926. “Remarks on Carter's Genus Conulites (= Dictyoconoides Nuttall),” etc., Rec. Geol. Surv. India, vol. lix, pp. 237–253; pls. xvi-xx.Google Scholar
Davies, L. M., 1930. “The Genus Dictyoconus and its Allies,” etc., Trans. Roy. Soc. Edin., vol. lvi, pp. 485–505; pls. i-ii.CrossRefGoogle Scholar
Davies, L. M., 1932. “The Genera Dictyoconoides Nuttall, Lockhartia nov., and Rotalia Lamarck,” etc., Trans. Roy. Soc. Edin., vol. lvii, pp. 397–428; pls. i-iv.Google Scholar
Douvillé, H., 1904. “Sur la Structure des Orbitolines,” Bull. Soc. Géol. Fr. (4), vol. iv, pp. 653–660; pl. xvii.Google Scholar
Davies, L. M., 1926. “La Forme conique chez les Foraminifères,” etc., Bull. Soc. Géol. Fr. (4), vol. xxvi, pp. 21–26; pl. ii.Google Scholar
Davies, L. M., Nov. 6, 1933. “A propos de l'Orbitolina gigantea,” C.R. Soc. Géol. Fr., pp. 198–199.Google Scholar
Gras, C. J. A., 1852. Catalogue des Corps Organisés fossiles qui se rencontrent dans le départment de l'Isère, Grenoble.Google Scholar
Halkyard, E., 1919. “The Fossil Foraminifera of the Blue Marl of the Côte des Basques, Biarritz,” Mem. Manchr. Lit. Phil. Soc., vol. lxii, pt. ii, 1917-1918.Google Scholar
Lamarck, J. B. P. A. de M. de, 1801. Système des Animaux sans Vertèbres, etc., Paris.Google Scholar
Lamarck, J. B. P. A. de M. de, 1816. Histoire naturelle des Animaux sans Vertèbres, vol. ii, Paris.Google Scholar
Lamouroux, J. V. F., 1821. Exposition méthodique des genres de l'ordre des Polypiers, Paris.Google Scholar
Lapparent, J. de, 1930. “Un Tribu d'Orbitolines au Crétacé supérieur,” Cent. Soc. Géol. Fr., Livre Jubilaire, vol. ii, pp. 473–479; pl. xlviii.Google Scholar
Lucas, G., Dec. 19, 1938. “Dictyoconus Cayeuxi, n. sp., Foraminifère de grande taille de l'Aalénien de l'Oranie occidentale,” C.R. Soc. Géol. Fr., pp. 353–355, figs. 1-6.Google Scholar
Michelin, J. L. H., 1840–1847. Iconographie Zoophytologique, etc., Paris.Google Scholar
Moberg, M. W., 1928. “New Species of Coskinolina and Dictyoconus? from Florida,” Rep. Fla. Geol. Surv., No. 19, pp. 166–175; pls. iii-v.Google Scholar
Orbigny, A. D. d', 1826. “Tableau Méthodique de la Classe des Céphalopodes,” Ann. Sci. Nat., vol. vii, pp. 245–314; pls. x-xvii.Google Scholar
Orbigny, A. D. d', 1850. Prodrome de Paléontologie stratigraphique universelle des Animaux mollusques et rayonnés, vol. ii, Paris.CrossRefGoogle Scholar
Parker, W. K., and Jones, T. E., 1860. “On the Nomenclature of the Foraminifera,” etc., Ann. Mag. Nat. Hist. (3), vol. vi, pp. 29–40.CrossRefGoogle Scholar
Parr, W. J., 1933. “Notes on Australian and New Zealand Foraminifera. No. 2: The Genus Pavonina and its Relationships,” Proc. Roy. Soc. Viet. (N.S.), vol. xlv, pp. 28–31; pl. vii.Google Scholar
Parr, W. J., and Collins, A. C., 1930. “Notes on Australian and New Zealand Foraminifera. No. 1: The Species of Patellina and Patellinella, with a Description of a new Genus, Annulopatellina,” Proc. Roy. Soc. Vict. (N.S.), vol. xliii, pp. 89–95; pl. iv.Google Scholar
Pfender, J., 1938. “Les Foraminifères du Valanginien Provençal,” Bull. Soc. Géol. Fr. (5), vol. viii, pp. 231–242; pl. xiii-xvi.Google Scholar
Prever, P. L., and Silvestri, A., 1905. “Contribute allo Studio delle Orbitolininae. II. Sul nuovo genere Chapmania Silv. e Prev.,” etc., Boll. Soc. Geol. Ital., vol. xxiii, pp. 467–486.Google Scholar
Roemer, C. F. Von, 1849. Texas, Bonn.Google Scholar
Roemer, C. F. Von, 1852. Die Kriedebildungen von Texas und ihre organischen Einschlüsse, Bonn.CrossRefGoogle Scholar
Schlumberger, C., and Douvillé, H., 1905. “Sur Deux Foraminifères Éocènes, Dictyoconus egyptiensis Chapman et Lituonella Roberti nov. gen. et sp.,” Bull Soc. Géol. Fr. (4), vol. v, pp. 291–304; pl. ix.Google Scholar
Schubert, R., 1912. “Über Lituonella und Coskinolina liburnica Stache,” etc., Jb. Geol. Reichs-Anst. Wien, vol. lxii, pp. 195–208; pl. x.Google Scholar
Silvestri, A., 1925. “Sulla Diffusione stratigrafica del Genere Chapmania Silv. e Prev.,” Mem. Accad. Nuovi Lincei (2), vol. viii, pp. 31–60; pl. i.Google Scholar
Silvestri, A., 1930. “Di alcune Orbitoline della Grecia,” Mem. Accad. Nuovi Lince (2), vol. xiv, pp. 223–266; pl. i.Google Scholar
Silvestri, A., 1931. “Sul genere Chapmanina,” etc., Boll. Soc. Geol. Ital., vol. 1, pp. 63–73; pl. i.Google Scholar
Silvestri, A., 1932. “Revisione di Orbitoline Nordamericane,” etc., Mem. Accad. Nuovi Lincei (2), vol. xvi, pp. 371–394; pls. i-ii.Google Scholar
Silvestri, A., 1932 a. “Foraminiferi del Cretaceo della Somalia,” Palaeontogr. Ital. (N.S.), vol. xxxii, pp. 143–204; pls. ix-xvi.Google Scholar
Stache, G., 1875. “Neue Boebachtungen in den Schichten der liburnischen Stufe,” Verh. Geol. Reichs-Anst. Wien, pp. 334–338.Google Scholar
Vaughan, T. Wayland, Jan. 1928. “Species of Large Arenaceous and Orbitoidal Foraminifera from the Tertiary Deposits of Jamaica,” Journ. Paleont., vol. i, no. 4, pp. 277–298; pls. xliii-1.Google Scholar
Vaughan, T. Wayland, Oct. 1932. “The Foraminiferal Genus Orbitolina in Guatemala and Venezuela,” Proc. Nat. Acad. Sci. Wash., vol. xviii, no. 10, pp. 609–610.CrossRefGoogle Scholar
Williamson, W. C., 1858. “On the Recent Foraminifera of Great Britain,” Ray. Soc. Publ.CrossRefGoogle Scholar