Science, Space and Technology News 2024
Reconstructions of some Meso–Cenozoic brachiopods, showing adaptations to certain environments. Credit: Shunyi Shi
In current oceans, mollusks such as clams, oysters, and snails are hugely diverse, with over 50,000 species, whereas brachiopods are rare by comparison with only 394 species known. But this was not always the case. The team found that brachiopods were evolving new shell shapes and ecological behaviors following the end-Permian mass extinction which compromised their numbers.
Dr Tom Stubbs of the Open University added: “In fact, the post-extinction brachiopods were innovating and trying new modes of life. One group, the terebratulids, were diversifying their body shapes and ecological functions from the end of the Permian to the present day, but their diversity did not increase.”“This was quite unexpected,” said Professor Zhong-Qiang Chen of the China University of Geosciences. “Brachiopods were far from failures after the end-Permian extinction.
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