Bayesian inference (BI) phylogram reconstructed using a newly generated 18S rDNA sequence for Rhadinorhynchus laterospinosus and retrieved sequences from GenBank for Rhadinorhynchus and the closest-related sequences to members of this genus. Outgroup: Rotaria rotatoria. Nodal support from maximum likelihood (ML) and Bayesian inference (BI) analyses are indicated as ML/BI. Bootstrap values lower than 70 and posterior probability values lower than 0.95 are omitted. The scale-bar indicates the expected number of substitutions per site.