Brachiopods are fascinating marine invertebrates often mistaken for clams, but they are entirely different organisms with a rich, 550-million-year history. Known commonly as "lamp shells," they were dominant in Paleozoic seas but are now relatively rare, often found in deep or cold waters.
Unlike bivalves (clams), where shells are mirror images of each other, brachiopod shells are top/bottom oriented and distinct, but each individual valve is symmetrical down the middle.
Depending on species, they live between 3 to 30 years. 🦴 The Fossil Record What is a Brachiopod? (And Why You Should Care) brachiopod
Here is a review of their significance, biology, and fossil record. 🌟 Key Takeaways
They were the most common shelled macroinvertebrates in the Paleozoic era. Depending on species, they live between 3 to 30 years
They resemble ancient Roman oil lamps, especially the Terebratulida order.
They use a specialized organ called a lophophore , a coil-shaped tentacle structure, to trap food, rather than gills. 🌟 Key Takeaways They were the most common
While decimated by the end-Permian mass extinction, they are not extinct, with ~400+ extant species. 🔬 Biology and Lifestyle