Adult Peltocephalus dumerilianus. Note the shields in the superior and lateral regions of the massive head. Captured and photographed by E.G.

 
 
  Part of: Gentil E, de Medeiros LA, Vogt RC, Barnett AA (2021) Biology of the Big-headed Amazon River Turtle, Peltocephalus dumerilianus (Schweigger, 1812) (Testudines, Pleurodira): the basal extant Podocnemididae species. Herpetozoa 34: 207-222. https://doi.org/10.3897/herpetozoa.34.e67807