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Problems of Ammonite Nomenclature. 5. On Acanthohoplites jacobi (Collet) and the jacobi zone of the Folkestone Sands

Published online by Cambridge University Press:  01 May 2009

L. F. Spath
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Extract

This note is prompted by the recent discovery (by Mr. R. Casey) of ammonites of the jacobi zone at the base of the Folkestone Sands.1 These ammonites include A. jacobi itself and since, more-over, the jacobi zone is likely to be much quoted, it seems particularly desirable to inquire whether the name jacobi can be safely used.

Type
Original Articles
Information
Geological Magazine , Volume 76 , Issue 6 , June 1939 , pp. 236 - 239
Copyright
Copyright © Cambridge University Press 1939

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References

page 236 note 1 See Spath, “Field Meeting at Folkestone, Kent,” Proc. Geol. Assoc., vol. xlvi, 1935, 431.Google Scholar

page 236 note 2 “Sur quelques espèces de l'Albien inférieur de Vöhrum (Hanovre),” Mém. Soc. phys. hist, nat., Genève, xxxv, fasc. 3, 10, 1907, 520, pl. viii, figs. 1–3.Google Scholar

page 236 note 3 “Die Gliederung der norddeutschen unteren Kreide,” Centralbl. f. Min., etc., 1908, 247.Google Scholar

page 236 note 4 Spath, , “On Cretaceous Cephalopoda from Zululand,” Ann. S. Afr. Mus., xii, pt. 7, 1921, 311.Google Scholar

page 236 note 5 Spath, , “Excursion to Folkestone, etc.,” Proc. Geol. Assoc., xxxiv, 1923, 73.Google Scholar

page 237 note 1 Spath, , “Report of the British National Committee on Entomological Nomenclature.” Proc. Entom. Soc., 1928, pp. 3 R, 11 R.Google Scholar

page 237 note 2 Compare a zoologist's procedure (Pilsby, “The Sessile Barnacles (Cirripedia), etc.” Smithson. Instit., U.S. Nat. Mus. Bull. No. 93, 1916, 59): Balanus tintinnabulum (Linnaeus) var. occator, Darwin, is without comment, quoted as a sub-species B. t. occator, Darwin.

page 237 note 3 “Sur les variations morphologiques d'Acanthoceras milletianum, d'Orbigny sp.,” Le Naturaliste, 28e anuée, 2e sér., No. 472, 1er 11, 1906, 245.Google Scholar

page 238 note 1 Op. cit., 525, pl. viii, fig. 5 (here chosen as lectotype) and fig. 4 (doubtful young).

page 238 note 2 “Über die Kreidefossilien des Kaukasus,” Beitr. Pal. Geol. Österr. Ung., xii, 114, pl. x, fig. 1.Google Scholar

page 238 note 3 “Untersuchung einiger Ammonitiden aus dem unteren Gault Mangyschlaks und des Kaukasus,” Verh. Russ. Kais. Min. Ges., St. Petersb., 2nd Ser., xlv, 1907, 498, pl. vii, figs. 9, 9a.Google Scholar

page 238 note 4 Often contracted to Acanthoplites, but the original spelling must be adhered to. Breistroffer (“Sur la presence d'une faune à Aucellines dans l'Albien de la Chartreuse,” C.R. Soc. géol. France, No. 3, 4 février, 1935, 28–30), put A. jacobi and its allies into Hypacanthoplites (as a subgenus).Google Scholar

page 238 note 5 “Etude sur les Ammonites et sur l'horizon stratigraphique du gisement de Clansayes,” Bull. Soc. géol. France (4), v, 1905, 411.Google Scholar

page 239 note 1 “Beiträge zur Kenntniss des südrussischen Aptien und Albien,” Verh. Russ. Kais. Min. Ges., St. Petersb., 2nd Ser., xlvii, 1909, 40, pl. ii, figs. 30–2.Google Scholar

page 239 note 2 “Note sur quelques Ammonites du Gault,” Bull. Soc. géol. France (3), xv, 1887, 566, pl. xiv, figs. 3–4.Google Scholar

page 239 note 3 Op. cit. (1907), 506, pl. viii, fig. 11.Google Scholar

4 Op. cit. (1935), 29.Google Scholar