hippuritoids
Hippuritoids are an extinct group of bivalve mollusks that lived during the Cretaceous period. They are characterized by their distinctive shells, which are often conical or irregular in shape. Unlike most bivalves, hippuritoids typically had a single, large, muscular adductor muscle and fused shells, making them appear more like a single organism than two separate valves.
These marine organisms were particularly abundant in shallow, warm waters of the Tethys Ocean. They are well-known
Hippuritoids are divided into several families, including Hippuritidae, Radiolitidae, and Caprinidae. Each family exhibits variations in