Ponciano, L. C. M. de O., & Machado, D. M. da C. (2007). Life habits analysis of the "Schuchertella" agassizi-Pthychopteria eschwegei association, Maecuru formation, Devonian, Amazonas Basin, Brazil. Anuário Do Instituto De Geociências, 30(1), 135–144. https://doi.org/10.11137/2007_1_135-144