Temporal range: 62Ma Early Palaeocene
Barbosa et al., 2008
Guarinisuchus is an extinct genus of marine crocodyliform from the Early Paleocene 62 million years ago of Brazil. The type species is G. munizi. It was a dominant predator in its environment, and reached a length of 3 m (10 ft). Guarinisuchus appears to be closely related to marine crocodylomorphs found in Africa, which supports the hypothesis that the group originated in Africa and migrated to South America before spreading into the waters off the North American coast.
- Barbosa, José Antonio; Alexander Wilhelm Armin Kellner & Maria Somália Sales Viana (March 2008). "New dyrosaurid crocodylomorph and evidences for faunal turnover at the K–P transition in Brazil". Proceedings of the Royal Society B: Biological Sciences 275 (1641): 1385–91. doi:10.1098/rspb.2008.0110. PMC 2602706. PMID 18364311.
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