👉 Pleurotomariidae is a family of extinct birds that lived during the Late Cretaceous period, about 68 million years ago. These birds are known for their distinctive feathered pattern, which resembles a pleurotomorph. The Pleurotomariidae include several species, including: 1. Pleurotomaurus: This bird is known for its large and powerful wingspan, making it one of the largest flying birds in the world at that time. 2