Eurymerus [SEP] parent taxon
Eurymerus
Eurymerus eburioides is a species of beetle in the family Cerambycidae, the only species in the genus Eurymerus.
the family has not formally been erected until Benson "et al." (2012) also found the same results in their analysis. 
To avoid further confusion between Plesiosauridae and Microcleididae, Benson "et al." (2012) proposed a stem-based definition for this taxon, utilizing "Plesiosaurus" as an external specifier. Microcleididae was defined as ""Microcleidus homalospondylus" and all taxa more closely related to it than to "Plesiosaurus dolichodeirus", "Cryptoclidus eurymerus", "Elasmosaurus platyurus", "Leptocleidus