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A Description of Eospirifer radiatus (J. de C. Sowerby)

Published online by Cambridge University Press:  01 May 2009

J. K. S. St. Joseph
J. K. S. St. Joseph
Affiliation:
Sedgwick Museum, Cambridge.
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Extract

In 1825 J. de C. Sowerby described and figured as Spirifer lineatus a brachiopod from the “ Wenlock Limestone ” of Dudley, choosing three syntypes; later he changed the specific name to radiatus. Of subsequent descriptions those of Hall (1852), Davidson (1866), Beecher and Clarke (1889), and Hall and Clarke (1894) are the most important. The present study is based on topotype material, while additional specimens for comparison have been collected by the writer from the Wenlock Shale of Malvern (Colwall Tunnel Tip Heap), from the Woolhope Limestone of Suckley, from the Wenlock Limestone of May Hill, and from the Tickwood beds and Wenlock Limestone on Wenlock Edge (railway cuttings near Presthope and Lilleshall Quarry). These, together with specimens from the Sedgwick Museum Collection, from the Birmingham University Collection, and from the British Museum (Natural History), have provided material adequately representative of variations in shape and size. Study has been made of external features, but more particularly of internal characters. The method of investigating the internal structures consists in grinding down the specimen either from the umbones, or from the lateral margin, and taking serial cellulose transfers at regular intervals, from which enlarged scale models may be constructed. Five specimens have been so treated, and as well as the construction of models, use has been made of perspective scale drawings to show the variations in internal structure. Growth lines are preserved on the transfers, but have in addition been examined in thin sections; specimens from Haverfordwest and Rubery preserved as casts have served to throw light on the muscle system, while finally the ventral valves of specimens preserved in shale, have been prepared to show the variations in internal structure.

Type
Original Articles
Information
Geological Magazine , Volume 72 , Issue 7 , July 1935 , pp. 316 - 327
Copyright
Copyright © Cambridge University Press 1935

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References

Synonymy

1825. Spirifer lineatus Sowerby, J. de C., Mineral Conchology, v, 151, and pl. 493, figs. 1, 2.Google Scholar
1834. Spirifer radiatus (lineatus)Sowerby, J. de C., Mineral Conchology., vi, General Index, 245.Google Scholar
1839. Spirifer radiatus Sowerby, J. de C., in Murchison, Silurian System, 624, 708, and pl. 12, fig. 6.Google Scholar
1845. Spirifer radiatus Murchison, , “Palaeozoic deposits of Scandinavia, etc.,” Proc. Geol. Soc. Lond., iv, 614, 628.Google Scholar
1846. Spirifer radiatus M’Coy, , A Synopsis of the Silurian Fossils of Ireland, p. 37.Google Scholar
1848. Spirifer cyrtaena Davidson, , Bull. Soc. géol. France, 2, v, 324.Google Scholar
1848. Spirifer radiatus Salter, , Mem. Geol. Survey Gt. Britain, ii, 292, 382.Google Scholar
1852. Spirifer radiatus Hall, J., “Palaeontology of New York” (Nat. Hist. N.Y., pt. vi, vol. ii), 66–7 and 265–6, pl. 22, figs. 2 d–r, and pl. 54, fig. 6.Google Scholar
1854. Spirifer plicatellus Murchison, , Siluria, 188 and pl. 5, fig. 9, pl. 21, fig. 2 (refigured in 2nd ed., 3rd ed., 1859, 4th ed., 1867, 5th ed., 1872).Google Scholar
1855. Spirifer radiata Sedgwick, and M’Coy, , British Palaeozoic Rocks and Fossils, p. 195.Google Scholar
1860. Spirifera plicatella Lindström, , Proc. Roy. Acad. Sci. Stockholm, p. 358.Google Scholar
1866. Spirifera plicatella var. radiata Davidson, , “Silurian Brachiopoda,” Palaeont. Soc. London, vol. v, pt. vii, 87–8, pl. 9, figs. 1–6.Google Scholar
1866. Spirifera plicatella Billings, Cat. Sil. Fossils of Anticosti, p. 48.Google Scholar
1879. Spirifer radiata Hall, , 28th Ann. Rept. New York State Mus. Nat. Hist., 157, pl. 24, figs. 20–30.Google Scholar
1880. Spirifer radiata White, 2nd Ann. Rept. Bureau of Statistics and Geology, Indiana, 497, pl. 3, figs. 5, 6.Google Scholar
1881. Spirifer radiatus Ramsay, , Mem. Geol. Survey Gt. Britain, North Wales, 431, 436, 439, 466.Google Scholar
1881. Spirifer plicatella var. radiata Davidson, , and Maw, , Geol. Mag., VIII, 108.Google Scholar
1882. Spirifera radiata Hall, , 11th Ann. Rept. State Geologist of Indiana, 296, pl. 24, figs. 20–30.Google Scholar
1882. Spirifera plicatella var. radiata Davidson, , “Brachiopoda,” Palaeont. Soc. London, vol. v, pt. vii (Supplement), 137–8, pl. 6, figs. 11–12.Google Scholar
1889. Spirifer radiatus Beecher, , and Clarke, , “Development of some Silurian Brachiopoda,” Mem. New York State Museum, i, no. 1, reptd. in Studies in Evolution, Yale, 1901, 382–6, and pl. 20, figs. 9–11.Google Scholar
1894. Spirifer radiatus Hall, and Clarke, , Palaeontology of New York, viii, pt. ii, 1–40 passim, esp. 12, 35, pl. 21, figs. 5, 9–18, and 26.Google Scholar
1899. Spirifera plicatella var. radiata Peach, , and Horne, , Mem. Geol. Survey Gt. Britain, “The Silurian rocks of Britain,” i, Scotland, 538, 679, 691.Google Scholar
1904. Spirifer radiatus Kindle, , 28th Ann. Rept. Dept. of Geology, etc., Indiana, 407, 442, pl. 8, figs. 19–22.Google Scholar
1908. Spirifer plicatellus var. radiatus Reed, and Reynolds, , Quart. Journ. Geol. Soc., lxiv, 539.Google Scholar
1913. Eospirifer radiatus Schuchert, , in Zittel-Eastman, Textbook of Palaeontology, 2nd ed., i, 411.Google Scholar
1915. Spirifer (Eospirifer) radiatus Bassler, , United States Nat. Museum, Bull. 92, 1176–7.Google Scholar
1916. Spirifer plicatellus var. radiatus Cantrill, et al. , Mem. Geol. Survey, South Wales Coalfield, pt. xii, 52, 55, 58, 66, 73–7.Google Scholar
1916. Spirifer plicatellus var. radiatus Gardiner, , and Reed, , Proc. Cottswold Nat. F.C., xix, pt. 2, 141, 159.Google Scholar
1917. Spirifer plicatellus var. radiata Reed, , “Brachiopoda from Girvan,” Trans. Roy. Soc. Edin., li, pt. 4–26, 951.Google Scholar
1920. Spirifer plicatellus var. radiatus Gardiner, , Proc. Cottswold Nat. F.C., xx, pt. 3, 215, 217.Google Scholar
1923. Spirifer radiatus Foerste, , Denison Univ. Bull., Journ. of Scientific Laboratories, xx, 43–5, 47.Google Scholar
1923. Spirifer radiatus, Hedström, , Sveriges Geologiska Undersökning, Arsbok 16, No. 6, 9–10, pl. 2, figs. 10–12.Google Scholar
1925. Spirifer radiatus Jones, O. T., Quart. Journ. Geol. Soc., lxxxi, 348, 372, 373, 375–6.Google Scholar
1925. Spirifer radiata Wills, L. J. et al. , Proc. Birmingham Nat. Hist, and Phil. Soc., xv, pt. iii, 73.Google Scholar
1927. Spirifer (Eospirifer) radiatus Gardiner, , Quart. Journ. Geol. Soc., lxxxiii, 525.Google Scholar
1927. Eospirifer radiatus Whittard, , Quart. Journ. Geol. Soc., lxxxiii, 751.Google Scholar
1929. Eospirifer radiatus Jones, O. T., in Evans and Stubblefield, Handbook of the Geology of Gt. Britain, 93, 98–9, 101.Google Scholar
1930. Eospirifer radiatus Pocock, R. W., Quart. Journ. Geol. Soc., Ixxxvi, 52 and pl. 6.Google Scholar
1933. Spirifer radiatus George, , Ann. Mat. Nat. Hist., 10, xi, 439.Google Scholar
For additional references to American literature see papers by Schuchert (U.S.G.S. Bulletin No. 87, pp. 402–3, 1897), Bassler (1915), and Foerste (1923).Google Scholar