Endangered venomous mammal predates dinosaurs' extinction, study confirms
Biologists have completely sequenced the mitochondrial genome for the Hispaniolan solenodon, filling in the last major branch of placental mammals on the tree of life. The study confirmed that the venomous mammal diverged from all other living mammals 78 million years ago, long before an asteroid wiped out the dinosaurs. Ref. Source 4b.
Menomous Solenodon, last survivor of a branch of mammals that appeared at the time of the dinosaurs, sequenced. An article presents a draft genome of a small shrew-like animal, the venomous Hispaniolan solenodon. This unusual animal is one of the only extant venomous mammals, and it is the sole remaining branch of mammals that split from other insectivores at the time of the dinosaurs. The solenodon genome sequence revealed the answer to several evolutionary questions, such as whether the solenodon species indeed survived the meteor impact that killed the dinosaurs. Source 7k.