Chordophyceae

Farr, E. R.; Zijlstra, G. (eds). (1996-current). Index Nominum Genericorum (ING). A compilation of generic names published for organisms covered by the ICN: International Code of Nomenclature for Algae, Fungi, and Plants. [previously: organisms covered by the International Code for Botanical Nomenclature] (2007 version).

Mángano, M. G.; Buatois, L. A.; Rindsberg, A. (2002). Carboniferous Psammichnites: systematic re-evaluation, taphonomy and autecology. <em>Ichnos.</em> 9(1-2): 1-22.