Weir J. (1931). The British and Belgian Carboniferous Bellerophontidae. <em>Transactions of the Royal Society of Edinburgh.</em> 56(31): 767-861. page(s): 811, pl. VI, fig. 3 [details] Available for editors [request]
original descriptionWeir J. (1931). The British and Belgian Carboniferous Bellerophontidae. <em>Transactions of the Royal Society of Edinburgh.</em> 56(31): 767-861. page(s): 811, pl. VI, fig. 3 [details] Available for editors [request]
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