Definition: The term "flosculariidae" refers to a family of extinct marine animals that lived during the late Cretaceous period, around 68-70 million years ago. These creatures were known as baleen whales and are often described as being similar to modern-day sperm whales but with a distinctive head shape. The species that fit into this category include: 1. Balaenoptera musculus: This is the most well-known member of the family, which includes