Hostname: page-component-76fb5796d-x4r87 Total loading time: 0 Render date: 2024-04-25T23:50:28.262Z Has data issue: false hasContentIssue false
  • English
  • Français

The Distribution of Punctae on the Brachiopod Shell

Published online by Cambridge University Press:  01 May 2009

R. Cowen
R. Cowen
Affiliation:
Sedgwick Museum, Downing Street, Cambridge.
Get access Rights & Permissions [Opens in a new window]

Abstract

The model recently proposed by Kemežys for the distribution of punctae on the brachiopod shell is examined and found to be insufficient. An alternative model is proposed: punctae appear to conform to a hexagonal close-packing pattern on the shell surface. A hypothesis to account for this is introduced, and further implications are discussed.

Type
Articles
Information
Geological Magazine , Volume 103 , Issue 3 , June 1966 , pp. 269 - 275
Copyright
Copyright © Cambridge University Press 1966

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

de Haro, A., 1960. Sobre el anatomia del manto en Terebratulina caputserpentis (Brachiopoda Testicardinia). Publnes Inst. Biol. apl., Barcelona, 31, 101–112.Google Scholar
Kemežys, K. J., 1965. Significance of punctae and pustules in brachiopods. Geol. Mag., 102, 315–324.Google Scholar
King, W., 1871. On the histology of the test of the Class Palliobranchiata. Trans. R. Ir. Acad., 24, 439–457.Google Scholar
Thompson, d' A. W., 1942. On growth and form. Cambridge, 2nd edn.Google Scholar
Williams, A. and Rowell, A. J., 1965. Morphology. In Moore, R. C. (ed.) Treatise on Invertebrate Paleontology, part (H) Brachiopoda, H.57–H.155.Google Scholar
Wright, A. D., 1966. The shell punctation of Dicoelosia biloba (Linnaeus). Geol. För. Förh., 87, 548–556.Google Scholar