1. Sacabambaspis janvieri (Vertebrata) y conodontes del Llandeiliano temprano en la Formación La Cantera, Precordillera de San Juan, Argentina;Albanesi;Boletín de la Academia de Ciencias, Córdoba,1995
2. The affinities of conodonts-new evidence from the Carboniferous of Edinburgh, Scotland;Aldridge;Lethaia,1986
3. The anatomy of conodonts;Aldridge;Philosophical Transactions of the Royal Society of London, B,1993
4. The latest vertebrates are the earliest;Aldridge;Geology Today,1994
5. Conodonts with preserved soft tissue from a new Ordovician Konservat-Lagerstätte;Aldridge;Journal of Micropalaeontology,1993