Terebratulidae
Terebratulidae is a family of brachiopods, a group of marine invertebrates that have a shell and a lophophore, a feeding structure. The family is characterized by its large, often complex shells, which are typically biconvex and have a distinct hinge line. The shells are usually calcareous, but some species may have shells composed of aragonite or other materials. Terebratulidae is known for its diverse range of forms, with some species having elaborate ornamentation and others being relatively simple. The family is found in both modern and fossil records, with some species dating back to the Paleozoic era. Terebratulidae is further divided into several genera, each with its own unique characteristics. The family is of interest to paleontologists and brachiopod specialists due to its rich fossil record and the insights it provides into the evolution of brachiopods.