Traits taxon details
original description
(of ) Cowper Reed, F. R. (1921). A Monograph of the British Ordovician and Silurian Bellerophontacea. Part II. Pages 49–92, i–viii; Plates IX–XIII. (Including Title-page and Index). <em>Monographs of the Palaeontographical Society.</em> 73(347): iii-92., available online at https://doi.org/10.1080/02693445.1921.12035582 page(s): 77, pl. XII, fig. 4 [details] 
|