(en) Rubinstein, C.V., Gerrienne, P., De La Puente, G.S.(2010).Early Middle Ordovician evidence for land plants in Argentina (eastern Gondwana). New Phytologist188(2): 365–9. PMID20731783. DOI: 10.1111/j.1469-8137.2010.03433.x.
(en) Rubinstein, C.V., Gerrienne, P., De La Puente, G.S.(2010).Early Middle Ordovician evidence for land plants in Argentina (eastern Gondwana). New Phytologist188(2): 365–9. PMID20731783. DOI: 10.1111/j.1469-8137.2010.03433.x.