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The Cretaceous Shales of Jamaica

Published online by Cambridge University Press:  01 May 2009

C. T. Trechmann
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Extract

A well preserved specimen 46mm. long and 22·5mm. wide (Fig.17) was found by Mr. R. Cory near Catadupa. The body whorl is contracted below the suture and has ten varices which die away at the anterior contraction and are slightly acute at the shoulder; the anterior part of the shell has five wavy spiral ridges. A smaller and more delicate but poorly preserved form (Fig. 18), with similar but more anteriorly produced varices, occurs just above the Barrettia limestone at St. Ann's Great River and resembles specimens of L. crassicostata Stol. from Assam figured by Spengler (Pal. Ind., N. Series, vol. viii, mem. i, 1923, pl. iii, figs. 34a, and b). Another species of Lyria or Volutilites (Fig. 16) with elongated spire has about 7 coarse uneven varices on the body whorl and occurs as badly preserved casts in the Providence shales. It attains a length of 47 mm.

Type
Original Articles
Information
Geological Magazine , Volume 64 , Issue 2 , February 1927 , pp. 49 - 65
Copyright
Copyright © Cambridge University Press 1927

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References

page 52 note 1 Abhand. K. Preuss. Geol. Landesanstalt, 1909, Heft 59, pl. xii, fig. 1. A plaster cast of the original specimen is preserved in the British Museum, Nat. History.Google Scholar

page 55 note 1 Mon. Brit. Fossil Trigoniae, 1872–1879, p. 189, pl. xl, figs. 1a–b, 7, 9, and 9a.Google Scholar

page 59 note 1 Terrain's Crétacés, 2me Partie, Geol. Survey of Egypt, Pal. Series, No. 3, 1917, p. 63, pl. iii, figs. 2 and 3.Google Scholar

page 59 note 2 Palaeontographica, Bd. xxx, Abt. ii, Lief iv, 1902, pl. xxiv, figs. 20–22.Google Scholar

page 59 note 3 Newton, R. B., Trans. Roy. Soc. South Africa, vol. i, pt. i, 1909, pp. 67, pl. vii, figs. 1–4.Google Scholar

page 64 note 1 Woodring, W. P. and others, Geology of the Republic of Haiti, 1924, pl. x, p. 612.Google Scholar