👉 The term "oligobrachiidae" is a group of extinct marine bivalve mollusks that lived during the Mesozoic era, approximately 65-60 million years ago. These organisms were characterized by their unique, spiral-shaped shell that served as a protective cover for their internal structures and provided protection from predators. The genus "Oligobrachiidae" is often associated with the extinct species "Pseudolobium", which lived during the
