👉 The term "cirratulidae" is a genus of extinct mammals from the Mesozoic era. These creatures were part of a group known as the Cirratulids, which lived around 56 million to 47.8 million years ago in what is now Argentina. They are known for their distinctive skull shape, with a flat top and two small eyes located on the sides of the head. The genus includes some of the most well-preserved remains ever found in the