Bolivosteus chacomensis

Description :

Description: English: Comparison of various cartilaginous fish and placoderm from the Lower Devonian of Bolivia. At top is the "vertebrata incertae sedis," Zamponiopteron triangularis, known from fossilized cartilaginous fin elements, and reconstructed as a shark-like fish. Below it is the primitive chimaera, Pucapampella rodrigae. At bottom is the only known Bolivian placoderm, the rhenanid, Bolivosteus chacomensi. Date: 19 May 2012. Source: Own work. Author: Apokryltaros.