*Duriatitan* isn't a nomen nudum, just relatively obscure. The full citation has been on Wikipedia for a few months (there doesn't seem to have an electronic version of the actual paper, unfortunately). Barrett, PM, RJB Benson & P Upchurch, 2010. Dinosaurs of Dorset: Part II, the sauropod dinosaurs (Saurischia, Sauropoda) with additional comments on the theropods. Proceedings of the Dorset Natural History and Archaeological Society 131: 113–126.
Isn't this the kind of thing that puts traditional publishing of scientific papers ad absurdum and then heaps mockery on it?
I mean, is anybody seriously expected to get that article by any other means than asking the authors for a pdf or reprint? Will anybody buy that journal for that article? Will anybody outside of Dorset even be able to find it in a library and take a photocopy? Will the Dorset Natural History and Archaeological Society make a single penny from it, let alone break even?
I guess the Proceedings don't have page charges for authors, while the PLoS journals charge a lot. I further guess the Proceedings are circulated just widely enough to count as published for the ICZN...