Traits taxon details
original description
Song, X.; Ruthensteiner, B.; Lyu, M.; Liu, X.; Wang, J.; Han, J. (2021). Advanced Cambrian hydroid fossils (Cnidaria: Hydrozoa) extend the medusozoan evolutionary history. <em>Proceedings of the Royal Society B: Biological Sciences.</em> 288(1944): 20202939., available online at https://doi.org/10.1098/rspb.2020.2939 page(s): 2 [details] Available for editors 
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