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2. The histological structure of the calcified lung of the fossil coelacanth Axelrodichthys araripensis (Actinistia: Mawsonidae);Brito;Palaeontology,2010
3. Carleton University Museum, 2009. http://hoopermuseum.earthsci.carleton.ca/placoderms/thirteenth.htm.
4. Paleoenvironmental interpretation of the Escuminac Formation based on geochemical evidence;Chidiac,1994
5. The soft anatomy of Bothriolepis;Denison;J. Paleont.,1941