Campanileidae

Campanileidae is a family of extinct marine gastropod molluscs. These snails are characterized by their tall, turret-shaped shells, which give them their common name, "tower shells." The shells are typically conical with a high spire and a small aperture. Fossils of Campanileidae are found in marine sedimentary rocks from the Cretaceous period through the Cenozoic era, indicating a widespread presence during these geological times. Their distribution appears to have been global, with significant fossil sites located in Europe, North America, and Asia.

The diet of Campanileidae is not well-documented, but based on their shell morphology and the analysis of associated fossils, they are believed to have been herbivores or detritivores, feeding on algae or decaying organic matter in shallow marine environments. The precise ecological role they played within their ancient ecosystems is still a subject of scientific investigation. The family Campanileidae is considered a significant group for understanding gastropod evolution and paleobiogeography during the Mesozoic and early Cenozoic. Their extinction likely occurred due to environmental changes or competition, though specific causes are not definitively established.