No CrossRef data available.
Article contents
The Periproctal Plates of Discoidea
Published online by Cambridge University Press: 01 May 2009
Extract
The periproctal plates of three specimens are here described and a comparison made with related genera, the latter including a description of the periproctals of Pseudodiscoidea.
- Type
- Original Articles
- Information
- Copyright
- Copyright © Cambridge University Press 1935
References
2.—Cotteau, G., Peron, P. A., and Gauthier, V., 1870–1891. Echinides fossiles de l’Algérie, tom, ii, Terr, secondaires, fasc. vi, Étage turonien, pi. vi, figs. 5 and 7.Google Scholar
3.—Hawkins, H. L., 1912. “The classification, morphology, and evolution of the Echinoidea Holectypoida,” Proc. Zool. Soc. London, 466.Google Scholar
5.—North, F. J., 1915. “On the Periproctal Plates of Discoidea cylindrica (Lamarck),” Ann. Mag. Nat. Hist., (8), xvi, 499.CrossRefGoogle Scholar
7.—Wright, T., 1873. “Cretaceous Echinodermata,” Palaeont. Soc. London, i, 208, pl. xlvii, fig. 4h.Google Scholar