Published in Palaeontology, in 1974, in volume 17, issue 2, pages 341-347
Created: 2016-04-23, modified: 2016-04-23![](https://www.biodiversitylibrary.org/pagethumb/49781705,60,60)
Published in Palaeontology, in 1974, in volume 17, issue 4, pages 949-962
Created: 2016-04-23, modified: 2016-04-23
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