blog posts Endangered venomous mammal predates dinosaurs’ extinction, study confirms May 5, 2016 4:00 pm by Claire BenjaminResearch Share on Facebook Tweet Email Images The University of Illinois and University of Puerto Rico have confirmed that Hispaniolan solenodon, a venomous mammal, diverged from all other living mammals 78 million years ago, long before an asteroid wiped out the dinosaurs. Share on Facebook Tweet Email