Abstract
IN thecidean brachiopods, which range from the Rhaetic to the present day, the shell-structure is less definite, and shows more variation, than in many other brachiopod sub-orders. Investigations I have carried out of this point1, as part of work undertaken for a “Treatise on Invertebrate Paleontology”, resulted in the conclusion that the structure was initially obscurely pseudopunctate, becoming densely punctate when a certain degree of structural organization was attained. This punctation never shows the regular en quinquonce pattern of the terebratuloids: it was attained in different stocks at different dates.
Similar content being viewed by others
Article PDF
References
Elliott, G. F., Ann. Mag. Nat. Hist., Ser. 12, 6, 693 (1953).
Eudes-Deslongchamps, E., Mém. Soc. Linn. Normandie, 9, 230 (1853).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
ELLIOTT, G. Shell-structure of Thecidean Brachiopods. Nature 175, 1124 (1955). https://doi.org/10.1038/1751124a0
Issue Date:
DOI: https://doi.org/10.1038/1751124a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.