https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/largest-late-paleozoic-bellerophontid-gastropod/7F11EBBCDEE13A498F8FD1D5873F7A96
The largest late Paleozoic bellerophontid gastropod | Journal of Paleontology | Cambridge Core
The largest late Paleozoic bellerophontid gastropod - Volume 64 Issue 3
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