Megathyrididae
The Megathyrididae are a family of brachiopods in the order Terebratulida. They are characterized by their large size, often exceeding 50 mm in length, and their distinctive shell morphology. Their shells are typically smooth or finely ribbed, and they often have a prominent beak at the anterior end. Megathyrididae are found in a variety of marine environments, from shallow coastal waters to the deep sea.
Common Names
Megathyrididae are not commonly known by any specific common names. However, they are sometimes referred to as "giant brachiopods" due to their large size.
Characteristics
Megathyrididae have the following characteristics:
- Large size, typically exceeding 50 mm in length.
- Smooth or finely ribbed shells.
- Prominent beak at the anterior end of the shell.
- Two valves (shells) that are hinged together.
- A pedicle, or stalk, that attaches the brachiopod to the substrate.
- A lophophore, a feeding structure composed of ciliated tentacles.
Environments
Megathyrididae are found in a variety of marine environments, including:
- Shallow coastal waters
- Deep-sea environments
- Reefs
- Continental shelves